----

----

| [ü] | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|----------|-----------------------------------------------------------------------------------------|
|     | For the quarterly period ended March 31, 2011                                           |
|  OR |                                                                                    |

| [   ] | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|----------------------|------------------------------------------------------------------------------------------|
|                 | For the transition period from ___________ to __________                                 |

----

| Minnesota                                                      | 41-0572550                           |
|----------------------------------------------------------------|--------------------------------------|
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.) |

----

| Yes | ü | No |   |
|-----|--------|----|--------|

| Yes |   | No |   |
|-----|--------|----|--------|

| Large accelerated filer  |   |                                                | Accelerated filer         | ü |
|-------------------------------|--------|-----------------------------------------------------|---------------------------|--------|
| Non-accelerated filer    |   |  (Do not check if a smaller reporting company) | Smaller reporting company |   |

| Yes |   | No | ü |
|-----|--------|----|--------|

----

----

TA

| PART I - FINANCIAL INFORMATION | Page                                                                                  |
|--------------------------------|---------------------------------------------------------------------------------------|
| Item 1                         | Financial Statements (Unaudited)                                                      | 3 |
|                           |                                                                                  | Condensed Consolidated Statements of Earnings | 3 |
|                           |                                                                                  | Condensed Consolidated Balance Sheets | 4 |
|                           |                                                                                  | Condensed Consolidated Statements of Cash Flows | 5 |
|                           |                                                                                  | Notes to the Condensed Consolidated Financial Statements | 6 |
|                           |                                                                                  |   | 1 |   | Basis of Presentation | 6 |
|                           |                                                                                  |   | 2 |   | Newly Adopted Accounting Guidance | 6 |
|                           |                                                                                  |   | 3 |   | Management Actions | 6 |
|                           |                                                                                  |   | 4 |   | Inventories | 7 |
|                           |                                                                                  |   | 5 |   | Goodwill and Intangible Assets | 7 |
|                           |                                                                                  |   | 6 |   | Debt | 8 |
|                           |                                                                                  |   | 7 |   | Warranty | 9 |
|                           |                                                                                  |   | 8 |   | Fair Value Measurements | 10 |
|                           |                                                                                  |   | 9 |   | Retirement Benefit Plans | 10 |
|                           |                                                                                  |   | 10 |   | Comprehensive Income | 11 |
|                           |                                                                                  |   | 11 |   | Commitments and Contingencies | 11 |
|                           |                                                                                  |   | 12 |   | Income Taxes | 11 |
|                           |                                                                                  |   | 13 |   | Stock-Based Compensation | 12 |
|                           |                                                                                  |   | 14 |   | Earnings Per Share | 12 |
|                           |                                                                                  |   | 15 |   | Segment Reporting | 12 |
|                           |                                                                                  |   | 16 |   | Related Party Transactions | 13 |
| Item 2                         | Management's Discussion and Analysis of Financial Condition and Results of Operations | 14 |
| Item 3                         | Quantitative and Qualitative Disclosures About Market Risk                            | 19 |
| Item 4                         | Controls and Procedures                                                               | 19 |
|                           |                                                                                  |   |   |   |   |   |
| PART II - OTHER INFORMATION    |                                                                                  |
| Item 1                         | Legal Proceedings                                                                     | 20 |
| Item 1A                        | Risk Factors                                                                          | 20 |
| Item 2                         | Unregistered Sales of Equity Securities and Use of Proceeds                           | 20 |
| Item 6                         | Exhibits                                                                              |   |   | 21 |
| Signatures                     |                                                                                  |   |   |   |   | 22 |

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Table of Contents

te

CO

|                                             |   | Three Months Ended |       |
|--------------------------------------------------|--------|--------------------|------------|
| (In thousands, except shares and per share data) |   | March 31           |       |
|                                             |   | 2011               |       |   | 2010 |   |
| Net Sales                                        |   | $                  | 172,591    |   |   | $ | 150,106 |   |
| Cost of Sales                                    |   |               | 100,660    |   |   |   | 86,346 |   |
| Gross Profit                                     |   |               | 71,931     |   |   |   | 63,760 |   |
| Operating Expense:                               |   |               |       |   |   |   |   |   |
| Research and Development Expense                 |   |               | 6,280      |   |   |   | 5,536 |   |
| Selling and Administrative Expense               |   |               | 57,459     |   |   |   | 51,730 |   |
| Total Operating Expense                          |   |               | 63,739     |   |   |   | 57,266 |   |
| Profit from Operations                           |   |               | 8,192      |   |   |   | 6,494 |   |
| Other Income (Expense):                          |   |               |       |   |   |   |   |   |
| Interest Income                                  |   |               | 68         |   |   |   | 45 |   |
| Interest Expense                                 |   |               | (415       | ) |   |   | (433 | ) |
| Net Foreign Currency Transaction Gains (Losses)  |   |               | 527        |   |   |   | (186 | ) |
| Other Income, Net                                |   |               | 31         |   |   |   | - |   |
| Total Other Income (Expense), Net                |   |               | 211        |   |   |   | (574 | ) |
|                                             |   |               |       |   |   |   |   |   |
| Profit Before Income Taxes                       |   |               | 8,403      |   |   |   | 5,920 |   |
| Income Tax Expense                               |   |               | 2,537      |   |   |   | 1,829 |   |
| Net Earnings                                     |   | $                  | 5,866      |   |   | $ | 4,091 |   |
|                                             |   |               |       |   |   |   |   |   |
| Earnings per Share:                              |   |               |       |   |   |   |   |   |
| Basic                                            |   | $                  | 0.31       |   |   | $ | 0.22 |   |
| Diluted                                          |   | $                  | 0.30       |   |   | $ | 0.21 |   |
|                                             |   |               |       |   |   |   |   |   |
| Weighted Average Shares Outstanding:             |   |               |       |   |   |
| Basic                                            |   |               | 18,963,177 |   |   |   | 18,682,335 |   |
| Diluted                                          |   |               | 19,556,036 |   |   |   | 19,090,423 |   |
|                                             |   |               |       |   |   |   |   |   |
| Cash Dividend Declared per Common Share          |   | $                  | 0.17       |   |   | $ | 0.14 |   |

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CO

|                                                                                                                                |   | March 31, |     |   | December 31, |   |
|-------------------------------------------------------------------------------------------------------------------------------------|--------|-----------|----------|--------|--------------|--------|
| (In thousands, except shares and per share data)                                                                                    |   | 2011      |     |   | 2010         |   |
| ASSETS                                                                                                                              |   |      |     |   |         |   |
| Current Assets:                                                                                                                     |   |      |     |   |         |   |
| Cash and Cash Equivalents                                                                                                           |   | $         | 38,919   |   |         | $      | 39,529 |   |
| Accounts Receivable, less Allowances of $4,582 and $4,311, respectively                                                             |   |      | 131,067  |   |         |   | 127,542 |   |
| Inventories                                                                                                                         |   |      | 66,704   |   |         |   | 61,746 |   |
| Prepaid Expenses                                                                                                                    |   |      | 13,343   |   |         |   | 7,993 |   |
| Deferred Income Taxes, Current Portion                                                                                              |   |      | 9,733    |   |         |   | 11,459 |   |
| Other Current Assets                                                                                                                |   |      | 28       |   |         |   | - |   |
| Total Current Assets                                                                                                                |   |      | 259,794  |   |         |   | 248,269 |   |
| Property, Plant and Equipment                                                                                                       |   |      | 285,402  |   |         |   | 287,751 |   |
| Accumulated Depreciation                                                                                                            |   |      | (200,542 | )      |         |   | (200,123 | ) |
| Property, Plant and Equipment, Net                                                                                                  |   |      | 84,860   |   |         |   | 87,628 |   |
| Deferred Income Taxes, Long-Term Portion                                                                                            |   |      | 14,004   |   |         |   | 14,182 |   |
| Goodwill                                                                                                                            |   |      | 20,575   |   |         |   | 20,423 |   |
| Intangible Assets, Net                                                                                                              |   |      | 25,422   |   |         |   | 25,339 |   |
| Other Assets                                                                                                                        |   |      | 7,440    |   |         |   | 7,827 |   |
| Total Assets                                                                                                                        |   | $         | 412,095  |   |         | $      | 403,668 |   |
| LIABILITIES AND SHAREHOLDERS’ EQUITY                                                                                          |   |      |     |   |         |   |   |   |
| Current Liabilities:                                                                                                                |   |      |     |   |         |   |   |   |
| Current Portion of Long-Term Debt                                                                                                   |   | $         | 3,235    |   |         | $      | 3,154 |   |
| Accounts Payable                                                                                                                    |   |      | 45,711   |   |         |   | 40,498 |   |
| Employee Compensation and Benefits                                                                                                  |   |      | 22,539   |   |         |   | 31,281 |   |
| Income Taxes Payable                                                                                                                |   |      | 480      |   |         |   | 509 |   |
| Other Current Liabilities                                                                                                           |   |      | 35,520   |   |         |   | 40,702 |   |
| Total Current Liabilities                                                                                                           |   |      | 107,485  |   |         |   | 116,144 |   |
| Long-Term Liabilities:                                                                                                              |   |      |     |   |         |   |   |   |
| Long-Term Debt                                                                                                                      |   |      | 37,087   |   |         |   | 27,674 |   |
| Employee-Related Benefits                                                                                                           |   |      | 33,242   |   |         |   | 33,898 |   |
| Deferred Income Taxes, Long-Term Portion                                                                                            |   |      | 4,488    |   |         |   | 4,525 |   |
| Other Liabilities                                                                                                                   |   |      | 5,425    |   |         |   | 5,294 |   |
| Total Long-Term Liabilities                                                                                                         |   |      | 80,242   |   |         |   | 71,391 |   |
| Total Liabilities                                                                                                                   |   |      | 187,727  |   |         |   | 187,535 |   |
| Commitments and Contingencies (Note 11)                                                                                             |   |      |     |   |         |   |   |   |
|                                                                                                                                |   |      |     |   |         |   |   |   |
| Shareholders' Equity:                                                                                                               |   |      |     |   |         |   |   |   |
| Preferred Stock, $0.02 par value; 1,000,000 shares authorized; no shares issued or outstanding                                      |   |      | -        |   |         |   | - |   |
| Common Stock, $0.375 par value; 60,000,000 shares authorized; 19,143,651 and 19,038,843 shares issued and outstanding, respectively |   |      | 7,178    |   |         |   | 7,140 |   |
| Additional Paid-In Capital                                                                                                          |   |      | 11,199   |   |         |   | 10,876 |   |
| Retained Earnings                                                                                                                   |   |      | 225,147  |   |         |   | 220,391 |   |
| Accumulated Other Comprehensive Loss                                                                                                |   |      | (19,156  | )      |         |   | (22,274 | ) |
| Total Shareholders’ Equity                                                                                                    |   |      | 224,368  |   |         |   | 216,133 |   |
| Total Liabilities and Shareholders’ Equity                                                                                    |   | $         | 412,095  |   |         | $      | 403,668 |   |

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CO

|                                                                                |   | Three Months Ended |   |
|-------------------------------------------------------------------------------------|--------|--------------------|--------|
| (In thousands)                                                                      |   | March 31           |   |
|                                                                                |   | 2011               |   |   | 2010 |   |
| OPERATING ACTIVITIES                                                                |   |               |   |   |   |   |
| Net Earnings                                                                        |   | $                  | 5,866  |   |   | $ | 4,091 |   |
| Adjustments to reconcile Net Earnings to Net Cash Provided by Operating Activities: |   |               |   |   |   |   |   |   |
| Depreciation                                                                        |   |               | 4,391  |   |   |   | 4,586 |   |
| Amortization                                                                        |   |               | 832    |   |   |   | 792 |   |
| Deferred Income Taxes                                                               |   |               | 2,071  |   |   |   | (634 | ) |
| Stock-Based Compensation Expense                                                    |   |               | 1,299  |   |   |   | 671 |   |
| Allowance for Doubtful Accounts and Returns                                         |   |               | 329    |   |   |   | 512 |   |
| Other, Net                                                                          |   |               | (6     | ) |   |   | 202 |   |
| Changes in Operating Assets and Liabilities, Excluding the Impact of Acquisitions:  |   |               |   |   |   |   |   |   |
| Accounts Receivable                                                                 |   |               | (3,943 | ) |   |   | 8,966 |   |
| Inventories                                                                         |   |               | (3,425 | ) |   |   | (3,066 | ) |
| Accounts Payable                                                                    |   |               | 5,199  |   |   |   | 995 |   |
| Employee Compensation and Benefits                                                  |   |               | (9,436 | ) |   |   | (7,675 | ) |
| Other Current Liabilities                                                           |   |               | (4,999 | ) |   |   | 1,648 |   |
| Income Taxes                                                                        |   |               | (3,075 | ) |   |   | 2,741 |   |
| Other Assets and Liabilities                                                        |   |               | (2,350 | ) |   |   | 272 |   |
| Net Cash (Used for) Provided by Operating Activities                                |   |               | (7,247 | ) |   |   | 14,101 |   |
| INVESTING ACTIVITIES                                                                |   |               |   |   |   |   |   |   |
| Purchases of Property, Plant and Equipment                                          |   |               | (1,634 | ) |   |   | (1,819 | ) |
| Proceeds from Disposals of Property, Plant and Equipment                            |   |               | 175    |   |   |   | 41 |   |
| Acquisition of Businesses, Net of Cash Acquired                                     |   |               | -      |   |   |   | 26 |   |
| Net Cash Used for Investing Activities                                              |   |               | (1,459 | ) |   |   | (1,752 | ) |
| FINANCING ACTIVITIES                                                                |   |               |   |   |   |   |   |   |
| Payment of Long-Term Debt                                                           |   |               | (934   | ) |   |   | (1,089 | ) |
| Issuance of Long-Term Debt                                                          |   |               | 10,000 |   |   |   | - |   |
| Proceeds from Issuance of Common Stock                                              |   |               | 1,393  |   |   |   | 913 |   |
| Tax Benefit on Stock Plans                                                          |   |               | 377    |   |   |   | 139 |   |
| Dividends Paid                                                                      |   |               | (3,244 | ) |   |   | (2,632 | ) |
| Net Cash Provided by (Used for) Financing Activities                                |   |               | 7,592  |   |   |   | (2,669 | ) |
|                                                                                |   |               |   |   |   |   |   |   |
| Effect of Exchange Rate Changes on Cash and Cash Equivalents                        |   |               | 504    |   |   |   | (469 | ) |
| Net (Decrease) Increase in Cash and Cash Equivalents                                |   |               | (610   | ) |   |   | 9,211 |   |
| Cash and Cash Equivalents at Beginning of Period                                    |   |               | 39,529 |   |   |   | 18,062 |   |
| Cash and Cash Equivalents at End of Period                                          |   | $                  | 38,919 |   |   | $ | 27,273 |   |
| SUPPLEMENTAL CASH FLOW INFORMATION                                                  |   |               |   |   |   |   |   |   |
| Cash Paid (Received) During the Period for:                                         |   |               |   |   |   |   |   |   |
| Income Taxes                                                                        |   | $                  | 2,865  |   |   | $ | (260 | ) |
| Interest                                                                            |   | $                  | 365    |   |   | $ | 416 |   |
| Supplemental Non-cash Investing and Financing Activities:                           |   |               |   |   |   |   |   |   |
| Capital Expenditures Funded Through Capital Leases                                  |   | $                  | 542    |   |   | $ | 1,066 |   |
| Collateralized Borrowings Incurred for Operating Lease Equipment                    |   | $                  | 345    |   |   | $ | 1,075 |   |

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Ba

Ne

Ma

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Table of Contents

|                         |   | Severance, Early Retirement and Related Costs |   |
|------------------------------|--------|-----------------------------------------------|--------|
| 2010 restructuring action    |   | $                                             | 1,671  |   |
| Cash payments                |   |                                          | (87    | ) |
| December 31, 2010 balance    |   | $                                             | 1,584  |   |
| 2011 utilization:            |   |                                          |   |   |
| Cash payments                |   |                                          | (861   | ) |
| Foreign currency adjustments |   |                                          | 31     |   |
| March 31, 2011 balance       |   | $                                             | 754    |   |

n

|                                                |   | March 31, |    |   | December 31, |   |
|-----------------------------------------------------|--------|-----------|---------|--------|--------------|--------|
|                                                |   | 2011      |    |   | 2010         |   |
| Inventories carried at LIFO:                        |   |      |    |   |         |   |
| Finished goods                                      |   | $         | 32,658  |   |         | $      | 31,355 |   |
| Raw materials, production parts and work-in-process |   |      | 15,710  |   |         |   | 15,414 |   |
| LIFO reserve                                        |   |      | (26,462 | )      |         |   | (26,462 | ) |
| Total LIFO inventories                              |   |      | 21,906  |   |         |   | 20,307 |   |
|                                                |   |      |    |   |         |   |   |   |
| Inventories carried at FIFO:                        |   |      |    |   |         |   |   |   |
| Finished goods                                      |   |      | 24,704  |   |         |   | 23,770 |   |
| Raw materials, production parts and work-in-process |   |      | 20,094  |   |         |   | 17,669 |   |
| Total FIFO inventories                              |   |      | 44,798  |   |         |   | 41,439 |   |
| Total inventories                                   |   | $         | 66,704  |   |         | $      | 61,746 |   |

Goodwill 

|                            |   |     |   |   | Accumulated |   |    |   |   |
|---------------------------------|--------|----------|--------|--------|-------------|--------|---------|--------|--------|
|                            |   |     |   |   | Impairment  |   |    |   |   |
|                            |   | Goodwill |   |   | Losses      |   |    | Total  |   |
| Balance as of December 31, 2010 |   | $        | 67,008 |   |        | $      | (46,585 | )      |   | $ | 20,423 |   |
| Adjustments                     |   |     | 28     |   |        |   | -       |   |   |   | 28 |   |
| Foreign currency fluctuations   |   |     | (1,439 | )      |        |   | 1,563   |   |   |   | 124 |   |
| Balance as of March 31, 2011    |   | $        | 65,597 |   |        | $      | (45,022 | )      |   | $ | 20,575 |   |

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Table of Contents

|                                      |   | Customer ListsandService Contracts |   |   | TradeName |   |   | Technology |   |   | Total  |   |
|-------------------------------------------|--------|------------------------------------|--------|--------|-----------|--------|--------|------------|--------|--------|--------|--------|
| Balance as of March 31, 2011:             |   |                               |   |   |      |   |   |       |   |   |   |   |
| Original cost                             |   | $                                  | 27,495 |   |      | $      | 4,955  |       |   | $      | 3,648  |   |   | $ | 36,098 |   |
| Accumulated amortization                  |   |                               | (8,248 | )      |      |   | (1,037 | )          |   |   | (1,391 | )      |   |   | (10,676 | ) |
| Carrying value                            |   | $                                  | 19,247 |   |      | $      | 3,918  |       |   | $      | 2,257  |   |   | $ | 25,422 |   |
| Weighted-average original life (in years) |   |                               | 14     |   |      |   | 14     |       |   |   | 11     |   |   |   |   |   |
|                                      |   |                               |   |   |      |   |   |       |   |   |   |   |   |   |   |   |
| Balance as of December 31, 2010:          |   |                               |   |   |      |   |   |       |   |   |   |   |   |   |   |   |
| Original cost                             |   | $                                  | 26,662 |   |      | $      | 4,709  |       |   | $      | 3,441  |   |   | $ | 34,812 |   |
| Accumulated amortization                  |   |                               | (7,344 | )      |      |   | (901   | )          |   |   | (1,228 | )      |   |   | (9,473 | ) |
| Carrying value                            |   | $                                  | 19,318 |   |      | $      | 3,808  |       |   | $      | 2,213  |   |   | $ | 25,339 |   |
| Weighted-average original life (in years) |   |                               | 14     |   |      |   | 14     |       |   |   | 11     |   |   |   |   |   |

| Remaining 2011 |   | $      | 2,489  |   |
|----------------|--------|--------|--------|--------|
| 2012           |   |   | 2,555  |   |
| 2013           |   |   | 2,532  |   |
| 2014           |   |   | 2,383  |   |
| 2015           |   |   | 2,287  |   |
| Thereafter     |   |   | 13,176 |   |
| Total          |   | $      | 25,422 |   |

D

|                       |   | March 31, |   |   | December 31, |   |
|----------------------------|--------|-----------|--------|--------|--------------|--------|
|                       |   | 2011      |   |   | 2010         |   |
| Long-Term Debt:            |   |      |   |   |         |   |
| Bank borrowings            |   | $         | 121    |   |         | $      | 128 |   |
| Credit facility borrowings |   |      | 35,000 |   |         |   | 25,000 |   |
| Collateralized borrowings  |   |      | 345    |   |         |   | 471 |   |
| Capital lease obligations  |   |      | 4,856  |   |         |   | 5,229 |   |
| Total Long-Term Debt       |   |      | 40,322 |   |         |   | 30,828 |   |
| Less: Current Portion      |   |      | 3,235  |   |         |   | 3,154 |   |
| Long-Term Portion          |   | $         | 37,087 |   |         | $      | 27,674 |   |

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Table of Contents

Wa

|                          |   | Three Months Ended |   |
|-------------------------------|--------|--------------------|--------|
|                          |   | March 31           |   |
|                          |   | 2011               |   |   | 2010 |   |
| Beginning balance             |   | $                  | 7,043  |   |   | $ | 5,985 |   |
| Additions charged to expense  |   |               | 2,880  |   |   |   | 3,002 |   |
| Foreign currency fluctuations |   |               | 50     |   |   |   | (69 | ) |
| Claims paid                   |   |               | (2,590 | ) |   |   | (2,008 | ) |
| Ending balance                |   | $                  | 7,383  |   |   | $ | 6,910 |   |

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Table of Contents

Fai

| ·   | Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. |
|--------------------|----------------------------------------------------------------------------------------------------------------------|

| ·   | Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. |
|--------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | Level 3: Unobservable inputs that reflect the reporting entity’s own assumptions. |
|--------------------|-----------------------------------------------------------------------------------------|

|                                        |   | Fair   |   |   |         |   |   |    |   |   |         |   |
|---------------------------------------------|--------|--------|--------|--------|--------------|--------|--------|---------|--------|--------|--------------|--------|
|                                        |   | Value  |   |   | Level 1 |   |   | Level 2 |   |   | Level 3 |   |
| Assets:                                     |   |   |   |   |         |   |   |    |   |   |         |   |
| Foreign currency forward exchange contracts |   | $      | 28     |   |         | $      | -      |    |   | $      | 28           |   |   | $ | - |   |
| Total Assets                                |   | $      | 28     |   |         | $      | -      |    |   | $      | 28           |   |   | $ | - |   |
| Liabilities:                                |   |   |   |   |         |   |   |    |   |   |         |   |   |   |   |   |
| Foreign currency forward exchange contracts |   | $      | 222    |   |         | $      | -      |    |   | $      | 222          |   |   | $ | - |   |
| Total Liabilities                           |   | $      | 222    |   |         | $      | -      |    |   | $      | 222          |   |   | $ | - |   |

Retir

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Table of Contents

|                               |   | Three Months Ended |   |
|------------------------------------|--------|--------------------|--------|
|                               |   | March 31           |   |
|                               |   | Pension Benefits   |   |   | Postretirement |   |
|                               |   | U.S. Plans         |   |   | Non-U.S. Plans |   |   | Medical Benefits |   |
|                               |   | 2011               |   |   | 2010 |   |   | 2011 |   |   | 2010 |   |   | 2011 |   |   | 2010 |   |
| Service cost                       |   | $                  | 166    |   |   | $ | 161 |   |   | $ | 25 |   |   | $ | 13 |   |   | $ | 33 |   |   | $ | 36 |   |
| Interest cost                      |   |               | 513    |   |   |   | 516 |   |   |   | 122 |   |   |   | 52 |   |   |   | 162 |   |   |   | 193 |   |
| Expected return on plan assets     |   |               | (580   | ) |   |   | (586 | ) |   |   | (108 | ) |   |   | (36 | ) |   |   | - |   |   |   | - |   |
| Amortization of net actuarial loss |   |               | 26     |   |   |   | 5 |   |   |   | - |   |   |   | - |   |   |   | 15 |   |   |   | 37 |   |
| Amortization of prior service cost |   |               | 137    |   |   |   | 139 |   |   |   | 39 |   |   |   | - |   |   |   | (145 | ) |   |   | (145 | ) |
| Foreign currency                   |   |               | -      |   |   |   | - |   |   |   | 61 |   |   |   | (69 | ) |   |   | - |   |   |   | - |   |
| Net periodic benefit cost          |   | $                  | 262    |   |   | $ | 235 |   |   | $ | 139 |   |   | $ | (40 | ) |   | $ | 65 |   |   | $ | 121 |   |

Co

|                                     |   | Three Months Ended |   |
|------------------------------------------|--------|--------------------|--------|
|                                     |   | March 31           |   |
|                                     |   | 2011               |   |   | 2010 |   |
| Net Earnings                             |   | $                  | 5,866  |   |   | $ | 4,091 |   |
| Foreign currency translation adjustments |   |               | 3,085  |   |   |   | (2,958 | ) |
| Pension adjustments                      |   |               | 33     |   |   |   | 31 |   |
| Comprehensive Income                     |   | $                  | 8,984  |   |   | $ | 1,164 |   |

Com

Inc

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Stoc

|                                        |   | Three Months Ended |   |
|---------------------------------------------|--------|--------------------|--------|
|                                        |   | March 31           |   |
|                                        |   | 2011               |   |   | 2010 |   |
| Stock options and stock appreciation rights |   | $                  | 507    |   |   | $ | 260 |   |
| Restricted share awards                     |   |               | 247    |   |   |   | 196 |   |
| Performance share awards                    |   |               | 306    |   |   |   | 41 |   |
| Share-based liabilities                     |   |               | 239    |   |   |   | 174 |   |
| Total Stock-Based Compensation Expense      |   | $                  | 1,299  |   |   | $ | 671 |   |

Ear

|                                          |   | Three Months Ended |       |
|-----------------------------------------------|--------|--------------------|------------|
|                                          |   | March 31           |       |
|                                          |   | 2011               |       |   | 2010 |   |
| Numerator:                                    |   |               |       |   |   |   |
| Net Earnings                                  |   | $                  | 5,866      |   |   | $ | 4,091 |   |
| Denominator:                                  |   |               |       |   |   |   |   |   |
| Basic - Weighted Average Shares Outstanding   |   |               | 18,963,177 |   |   |   | 18,682,335 |   |
| Effect of dilutive securities:                |   |               |       |   |   |   |   |   |
| Employee stock options                        |   |               | 592,859    |   |   |   | 408,088 |   |
| Diluted - Weighted Average Shares Outstanding |   |               | 19,556,036 |   |   |   | 19,090,423 |   |
| Basic Earnings per Share                      |   | $                  | 0.31       |   |   | $ | 0.22 |   |
| Diluted Earnings per Share                    |   | $                  | 0.30       |   |   | $ | 0.21 |   |

Seg

|                        |   | Three Months Ended |    |
|-----------------------------|--------|--------------------|---------|
|                        |   | March 31           |    |
|                        |   | 2011               |    |   | 2010 |   |
| Americas                    |   | $                  | 108,142 |   |   | $ | 92,684 |   |
| Europe, Middle East, Africa |   |               | 45,610  |   |   |   | 43,006 |   |
| Asia Pacific                |   |               | 18,839  |   |   |   | 14,416 |   |
| Total                       |   | $                  | 172,591 |   |   | $ | 150,106 |   |

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Ma

|                                            |   | Three Months Ended |    |
|-------------------------------------------------|--------|--------------------|---------|
|                                            |   | March 31           |    |
|                                            |   | 2011               |    |   | % |   |   | 2010 |   |   | % |   |
| Net Sales                                       |   | $                  | 172,591 |   |   |   | 100.0 |   |   | $ | 150,106 |   |   |   | 100.0 |   |
| Cost of Sales                                   |   |               | 100,660 |   |   |   | 58.3 |   |   |   | 86,346 |   |   |   | 57.5 |   |
| Gross Profit                                    |   |               | 71,931  |   |   |   | 41.7 |   |   |   | 63,760 |   |   |   | 42.5 |   |
| Operating Expense:                              |   |               |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Research and Development Expense                |   |               | 6,280   |   |   |   | 3.6 |   |   |   | 5,536 |   |   |   | 3.7 |   |
| Selling and Administrative Expense              |   |               | 57,459  |   |   |   | 33.3 |   |   |   | 51,730 |   |   |   | 34.5 |   |
| Total Operating Expense                         |   |               | 63,739  |   |   |   | 36.9 |   |   |   | 57,266 |   |   |   | 38.2 |   |
| Profit from Operations                          |   |               | 8,192   |   |   |   | 4.7 |   |   |   | 6,494 |   |   |   | 4.3 |   |
| Other Income (Expense):                         |   |               |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest Income                                 |   |               | 68      |   |   |   | - |   |   |   | 45 |   |   |   | - |   |
| Interest Expense                                |   |               | (415    | ) |   |   | (0.2 | ) |   |   | (433 | ) |   |   | (0.3 | ) |
| Net Foreign Currency Transaction Gains (Losses) |   |               | 527     |   |   |   | 0.3 |   |   |   | (186 | ) |   |   | (0.1 | ) |
| Other Income, Net                               |   |               | 31      |   |   |   | - |   |   |   | - |   |   |   | - |   |
| Total Other Income (Expense), Net               |   |               | 211     |   |   |   | 0.1 |   |   |   | (574 | ) |   |   | (0.4 | ) |
|                                            |   |               |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Profit Before Income Taxes                      |   |               | 8,403   |   |   |   | 4.9 |   |   |   | 5,920 |   |   |   | 3.9 |   |
| Income Tax Expense                              |   |               | 2,537   |   |   |   | 1.5 |   |   |   | 1,829 |   |   |   | 1.2 |   |
| Net Earnings                                    |   | $                  | 5,866   |   |   |   | 3.4 |   |   | $ | 4,091 |   |   |   | 2.7 |   |
| Earnings per Diluted Share                      |   | $                  | 0.30    |   |   |   |   |   |   | $ | 0.21 |   |   |   |   |   |

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| Growth Elements  | 2011 v. 2010 |
|------------------|--------------|
| Organic Growth:  |         |
|             | Volume       | 13.5% |
|             | Price        | - |
| Organic Growth   | 13.5%        |
| Foreign Currency | 1.5%         |
|             | Total        | 15.0% |

| ·   | an organic sales increase of approximately 13.5%, excluding the effects of acquisitions and foreign currency exchange, due to volume growth in equipment sales; and |
|--------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ·   | a favorable direct foreign currency exchange impact of approximately 1.5%. |
|--------------------|----------------------------------------------------------------------------|

|                           |   | Three Months Ended |    |
|--------------------------------|--------|--------------------|---------|
|                           |   | March 31           |    |
|                           |   | 2011               |    |   | 2010 |   |   | % |   |
| Americas                       |   | $                  | 108,142 |   |   | $ | 92,684 |   |   |   | 16.7 |   |
| Europe, Middle East and Africa |   |               | 45,610  |   |   |   | 43,006 |   |   |   | 6.1 |   |
| Asia Pacific                   |   |               | 18,839  |   |   |   | 14,416 |   |   |   | 30.7 |   |
| Total                          |   | $                  | 172,591 |   |   | $ | 150,106 |   |   |   | 15.0 |   |

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|                                                         |   | Three Months Ended |   |
|--------------------------------------------------------------|--------|--------------------|--------|
|                                                         |   | March 31           |   |
|                                                         |   | 2011               |   |   | 2010 |   |
| Operating Activities                                         |   | $                  | (7,247 | ) |   | $ | 14,101 |   |
| Investing Activities:                                        |   |               |   |   |   |   |   |   |
| Purchases of Property, Plant and Equipment, Net of Disposals |   |               | (1,459 | ) |   |   | (1,778 | ) |
| Acquisitions of Businesses, Net of Cash Acquired             |   |               | -      |   |   |   | 26 |   |
| Financing Activities                                         |   |               | 7,592  |   |   |   | (2,669 | ) |
| Effect of Exchange Rate Changes on Cash and Cash Equivalents |   |               | 504    |   |   |   | (469 | ) |
| Net (Decrease) Increase in Cash and Cash Equivalents         |   | $                  | (610   | ) |   | $ | 9,211 |   |

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|   |   | March 31, 2011 |   | December 31, 2010 |   | March 31, 2010 |
|--------|--------|----------------|--------|-------------------|--------|----------------|
| DSO    |   | 64             |   | 59                |   | 67             |
| DIOH   |   | 87             |   | 83                |   | 93             |

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Ite

Ite

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Item 

 1A

Item 2. 

| For the Quarter EndedMarch 31, 2011 |   | Total Numberof SharesPurchased (1) |   | Average PricePaid Per Share |   |   | Total Number ofShares Purchasedas Part of PubliclyAnnounced Plansor Programs |   | Maximum Number ofShares that May YetBe Purchased |   |
|-------------------------------------|--------|------------------------------------|--------|-----------------------------|--------|--------|------------------------------------------------------------------------------|--------|--------------------------------------------------|--------|
| January 1 - 31, 2011                |   |                               | 10     |                        |   | $      | 38.41                                                                        |   |                                             |   | - |   |   |   | 188,874 |   |
| February 1 - 28, 2011               |   |                               | -      |                        |   |   | -                                                                            |   |                                             |   | - |   |   |   | 1,188,874 |   |
| March 1 - 31, 2011                  |   |                               | 8,765  |                        |   |   | 40.65                                                                        |   |                                             |   | - |   |   |   | 1,188,874 |   |
| Total                               |   |                               | 8,775  |                        |   | $      | 40.65                                                                        |   |                                             |   | - |   |   |   | 1,188,874 |   |

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Item 6

| Item # |   | Description                                   |   | Method of Filing                                                                                                                 |
|--------|--------|-----------------------------------------------|--------|----------------------------------------------------------------------------------------------------------------------------------|
| 3i     |   | Restated Articles of Incorporation            |   | Incorporated by reference to Exhibit 3i to the Company’s report on Form 10-Q for the quarterly period ended June 30, 2006. |
| 3ii    |   | Certificate of Designation                    |   | Incorporated by reference to Exhibit 3.1 to the Company’s Form 10-K for the year ended December 31, 2006.                  |
| 3iii   |   | Amended and Restated By-Laws                  |   | Incorporated by reference to Exhibit 3iii to the Company’s Form 8-K dated December 14, 2010.                               |
| 31.1   |   | Rule 13a-14(a)/15d-14(a) Certification of CEO |   | Filed herewith electronically.                                                                                                   |
| 31.2   |   | Rule 13a-14(a)/15d-14(a) Certification of CFO |   | Filed herewith electronically.                                                                                                   |
| 32.1   |   | Section 1350 Certification of CEO             |   | Filed herewith electronically.                                                                                                   |
| 32.2   |   | Section 1350 Certification of CFO             |   | Filed herewith electronically.                                                                                                   |

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SIGN

|   |   |           |   | TENNANT COMPANY                                                                                      |
|--------|--------|----------------|--------|------------------------------------------------------------------------------------------------------|
|   |   |           |   |                                                                                                 |
| Date:  |   | April 28, 2011 |   | /s/   H. Chris Killingstad                                                            |
|   |   |           |   | H. Chris KillingstadPresident and Chief Executive Officer                                            |
|   |   |           |   |                                                                                                 |
| Date:  |   | April 28, 2011 |   | /s/   Thomas Paulson                                                                  |
|   |   |           |   | Thomas PaulsonVice President and Chief Financial Officer(Principal Financial and Accounting Officer) |

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