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Cojin
TJ

52
1165
.C 729
1917

83

Machine-Shop Arithmetic

SHOWS HOW ALL SHOP PROBLEMS ARE WORKED

OUT AND "WHY." INCLUDES CHANGE GEARS
FOR CUTTING ANY THREADS ; DRILLS, TAPS,
SHINK AND FORCE FITS; METRIC SYS-
TEM OF MEASUREMENTS AND
THREADS. USED BY ALL CLASSES
OF MECHANICS, APPRENTICES,

[blocks in formation]

NEW YORK :
THE NORMAN W. HENLEY PUBLISHING CO.

2 West 45TH STREET

Copyright 1912
By The NORMAN W. HENLEY PUBLISHING CO.

Copyright 1905
By The DERRY-COLLARD COMPANY

PRESS OF
BRAUNWORTH & CO.
PRINTERS AND BOOKBINDERS

BROOKLYN, N. Y.

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