INSTRUCTION MANUALDIGITAL BORE GAUGE

Model No. : CDI-10D / CDI-18D <combined>

Thank you for purchasing the Digital Bore Gauge.
Please read this manual thoroughly before use for proper operation.

■PART IDENTIFICATION※Not including quantization error (±1 count)

Model No.
Extension Washer 0.5mm(CDI-18D)
Measurement Range (mm)(mm)
Resolution※＊
Wide Range Accuracy (µm)
(CDI-10D) (CDI-18D)※＊
Adjacent Error (µm)
Extension Rod※＊
Repeat Accuracy (µm)
Single Probe Measuring Range (mm)Extension Washer (mm)(g)
WeightDigital Indicator

LCD Display[ABS/SET]
Button※2ABS※1■SPECIFICATIONS ＊：With supplied Digital Indicator.

ABS/SETmm

MIN

ZERO/ONCAL[MIN] Button[ZERO/ON]
Button

Clamp
Screw

[CAL] ButtonSpacerProtective Cover

Grip(CDI-10D) (CDI-18D)
Spanner※Spanner shape may varyfrom above drawing,
however function will not
be affected.

Length below grip-100mm

Measurement
Head

Length below
grip-50mm

Extension
RodACCESSORIESExtension Rods
CDI-10D ........ 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10 mm (9 pieces)
CDI-18D ........ 10, 11, 12, 13, 14, 15, 16, 17, 18 mm (9 pieces)● Spanner ........ 1● Battery ........... CR2032 Lithium Battery (Included for testing)●■BATTERY REPLACEMENTNOTICEShaft

Probe Tip(CDI-10D)

Extension
RodMeasurement
Head● This is a precision instrument, use care not to dropor mishandle.

● Please do not disassemble or modify.
● Keep instrument away from water and oil.
● Use only with supplied Extension Rods and Washers.
● Keep instrument away from direct sunlight andhigh temperatures such as in a car, near a stoveor heat source.
● After use, remove dust and cutting chips andapply rust preventative oil to components
including Extension Rods, and Extension● Washers. When not in use store in original case.
● This product is for measuring inside diameter; use
only as directed. Improper use may cause
accident or injury.
● Avoid using in locations with high electric fields,such as near fluorescent lights or switching power
supplies, as it may cause erroneous reading todisplay on LCD.

ProbeTip
Guide(CDI-18D)※1: This button not used.
※2: “0.01” Indicates bar graph display units. Bar graph display
will increase or decrease by one bar for each 0.01mm
change in measured value.

CDI-10D
CDI - 18D
10-18
6-100.002
12530.90.70.5250
270Open battery door using the tabs
on either side. Insert battery with“+” side facing downward. Push indoor to replace.
Battery(CR2032)

Battery
DoorCaution
Only use CR2032 Lithium Battery.

■ASSEMBLY①Remove the protective cover by
unscrewing the two screws which hold thecover in place.

Attaching the Protective Cover②Without removing the Rod or Washers, follow the“Assembly” procedure to reattach the Indicator andClamp without the Spacer.

Clamp
Screw

Example: CDI-10D For 8.5mm Measurement

Example: CDI-18D For 14.5mm Measurement

Clamp
Screw

Extension Rod:8.5mm

NutSpannerSpannerScrews Indicator

RemoveSpacer

Attach③Mount the Protective Cover to the Indicator and attachwith the 2 mounting screws. (Figure: 2)③Choose combination of Rod and Washer (CDI-18D only) applicablefor desired measurement range.
1. Using the Spanner, loosen the nut
below the Measurement Head.
2. Attach the Extension Rod andsecure by tightening the nut.

When using the Protective Cover, please attach usingthe following procedure.
①Loosen the Clamp Screw and remove Clamp andSpacer from shaft. (Figure: 1)

Insert②Loosen the Clamp Screw and insert theDigital Indicator into the gauge body.
Tighten Clamp Screw to secure.

ZERO/ONCALRemoveMIN※To reattach the protective cover, please refer tothe section: “Attaching the Protective Cover”※After attaching to body, press the[ZERO/ON] Button to turn on power. Checkfor proper operation by pressing on theProbe Tip. If the LCD display reading does
not change, readjust the insertion depth ofthe indicator.

ABS/SETmm(Figure: 1)

Attach Extension Rod and Extension
Washer to Measurement Head andsecure with the supplied Spanner.
Extension
Extension
Rod: 14mm ＋Washer: 0.5mm(Figure: 2)

ProtectiveCover■MEASUREMENT
For accurate measurements, please follow the procedure below.
①In cross section perpendicular to the axis of the bore, position the gauge along diameter ⓐ. (Figure: 1)
This is the maximum distance, and at this point the Indicator will read the maximum value.
The Guide will automatically position the Measurement Head along diameter ⓐ.
※ CDI-10D Does not have a guide, manually position the probe for maximum reading in this direction.
②In cross section parallel to the axis of the bore through diameter ⓐ, position the indicator to minimize the distance ⓑ. (Figure: 2)
In this position the Indicator will read the minimum value. This position must be manually achieved by pivoting the gauge and noting
the point where the Indicator shows the minimum value. (Figure: 3)
ammｂ

ABS/SETABSMIN
CALZERO/ON(Figure: 1)(Figure: 2)(Figure: 3)■OPERATION①Before use, please make sure the Measurement Head components are securely tightened. Tighten as necessary.

②Clean the gauge head and the ID of a Ring Gauge Standard using parts cleaner or cleaning solution.
③Press the [ ZERO/ON ] Button to turn on power. ※Power is turned off with a long press to the [ ZERO/ON ] Button.

ABSOLUTE MODE (ABS)①Turn on power. If the “”, “※Displays absolute measurement of workpiece.

” symbols are displayed on the LCD, press the [MIN] Button to turn off.

②Make the “SET” value of the Bore Gauge match the ID of the Ring Gauge Standard. Press and hold the [ABS/SET] Button until“SET” blinks on the display.
③Continue holding the [ABS/SET] Button and the display character to the left will blink. Use a short press of the [ABS/SET] Button tochange the value, and a long press to change the character being modified.
Repeat this process to enter the dimension of the Ring Gauge Standard on the LCD display. (Figure: 4)④When the value is entered, the flashing position will return to “SET”.
A short press of the [ABS/SET] Button to turn off the flashing.

⑤Insert the Measurement Head into the Ring Gauge Standard andpress the [MIN] Button to put the Indicator into minimum-mode. Slowly
pivot the gauge (Figure: 3) to display the minimum value.
⑥Remove the gauge from the Ring Gauge and press the [CAL] Button
until “OK” is momentarily displayed.
Preparation for measurement is now complete.

ABSmm

ABS/SETMIN

ZERO/ONCAL(Figure: 4)⑦Put the gauge into the workpiece to be measured, and pivot the gauge
slowly. (Figure: 3) The LCD will display the measured value. (Figure: 5)※Press the [ON/ZERO] Button momentarily to reset display inpreparation to measure the next workpiece.

COMPARATIVE MEASUREMENT※Display difference between workpiece andreference standard.

①Turn on power. If “”, or “” symbols are displayed on the LCD,
press the [MIN] Button to turn off. If “ABS” is displayed press the [ABS]
Button to turn off.

ABS

mm

ABS/SETMIN

ZERO/ON

Workpiece
Workpiece Dimension(Figure: 5)

ZERO/ON

Workpiece
Difference between
Workpiece andReference Standard (Figure: 6)

CAL②Insert the measuring head into the Ring Gauge Standard and press[MIN] Button to put the Indicator into minimum-mode. Slowly pivot thegauge (Figure: 3) to display the minimum value.
③Remove the gauge from the Ring Gauge and press the [CAL] Button
until “OK” is momentarily displayed.
Preparation for measurement is now complete.

④Put the gauge into the workpiece to be measured, and pivot the gauge
slowly. (Figure: 3) The LCD will display the difference between themeasured workpiece and the reference standard. (Figure: 6)※Press the [ON/ZERO] Button momentarily to reset display inpreparation to measure the next workpiece.

mm

ABS/SETMINCAL■TROUBLESHOOTINGERROR CONDITIONCORRECTIVE ACTION● LCD does not display● Cycle power by removing and● Display is not clear

replacing battery.
● Replace battery with new one.

● Displayed value is unstable

Ring Gauge
Adjust Reading Standard※If problem persists, or if you have any questions,please contact distributor or place of purchase.
※Please note, manufacturer is unable to respondto inquires or provide service directly. Pleasecontact distributor or place of purchase.

Niigata seiki Co., Ltd.
6-15-22, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-31-5660 Fax. : +81-256-39-7730

MAIL:intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp

I240-K1 1603