The Bedford gazette. [volume] (Bedford, Pa.) 1805-current, 1861-04-05
ROHRER'S
R0HRER'S
ROHRER'S
ROHkER'S
R0HRER'S
PRACTICAL CALCULATOR.
PRACTICAL CALCULATOR.
PRACTICAL CALCULATOR.
PRACTICAL CALCULATOR.
PRACTICAL CALCULATOR.
ROHRER'S PRACTICAL CAL

Book OF Plain Rules and Calculations for Business
Operation, By Martin NJ. RohIer, Practical
Surveyor and Conveyancer. New Edi-
ton, Published by J. B. Lippincott
x Co., Philadelphia
This work contains 204 pages. and upwards of
| 500 Rules and Examples, entirely and thoroughly
| dTactcal. such as arse every day in the common
pursuits of Business. Ii has already passed through
number of Editions n rapid succession, and is
pronounced by all classes OF business men to be
the handiest book of reference, pertaining to cacu
lations. that has ever been published.
Every example in the book is wo ked out in full
and tated IN plain manner, so that when par
lie case arises, those referring 20 the work will
find 40 difficulty in readily solving il in word,
the general arrangement of the Calculator is so
simple. that ary one " knows 10 add sub
stract, multiply, ordivide, easily solve any or
dnary example that arises in business, or arrive at
the result of any estimate required.
The chief aim or the author has been TO eschew
theory and philosophy in figures, aiming only at
facts and simplicity, believing that business men
care little about spending time in discussing the
philosophy of rules or the science OF figures, deem
ing 1t sufic ,ent for their purpose 10 be able at
moment, by reference, 10 ariye at the true result
The calculator differs in this respect from all A
rithmetics of the day, and kindred works-it Is
key TO practical business calcuatons-it is, in the
hands OF the business man, what the key 10 math-
emrtical works in the hands of The teacher the
school-room-it facilitates time and insures cor
rectness.
THE WORK TREATS OF THE
Measurement OF Land, of Lumber, of Brick and
Brick work, of Stone and Stone Work, of Grain
and Gram Bins, of Coal and Coal Bins, of Wood, of
Solid, of Liquids, of Circular, of Square or lrregu
lal Vessels, OF Cisterns and Vats, of Roofing, of
Pasterers Painters, G ziers', PAYERS Plumb, RS,
Paper Hangers, and Upholsters', Work. 1t treats
OF Currency end of Foreign and Domestic Exchange
of the Decimal System, of Reduction and It's extea-
ded application 10 Business, of Simple and compound
Interest, and their entire application 10 Business
transactions, with the laws and usages governing
nd regulating the same, together with numerous
Commerci ia Forms-of Legal Tender, of Partial
Payments Notes, of Banking aud Bank Discount
of Equation Of Payments aud Partnership Accounts
OF Assessment of Taxes, of Weights and Measures,
of Square and Cubic Measure, of the Square Root
and its application to Business of Surfaces, of Ex
cavation, and of many other important practical
matters not within the scope of advertisement
TO mention.
G-Mailed (post paid) to any part of the United
States upon rsceip. the money. Price of sin
gle Copy, in Cloth, 60 Cents, two Copies for 81.
90. Bound in Pocket-book form, Morocco, Sl.o6
per copy.
ADDRESS
NJ. NJ. ROHRER,
Box 1911 Philadelphia P. o., Pa.
30, 1s60.-6ms.