7

THE

PRACTICAL

MODEL CALCULATOR,

FOR THE

ENGINEER, MECHANIC, MACHINIST,

MANUFACTURER OF ENGINE-WORK, NAVAL ARCHITECT,
MINER, AND MILLWRIGHT.

BY

OLIVER BYRNE,

"

CIVIL, MILITARY, AND MECHANICAL ENGINEER.

Compiler and Editor of the "Dictionary of Machines, Mechanics, Engine-work, and Engineering,;"
Author of "The Companion for Machinists, Mechanics, and Engineers" Author and Inventor

of a New Science, termed "The Calculus of Form," a substitute for the differential

and Integral Calculus; "The Elements of Euclid by Colours," and numerous

other Mathematical and Mechanical Works. Surveyor-General of the

English Settlements in the Falkland Isles. Professor of
Mathematics, College of Civil Engineers, London.

PHILADELPHIA:
HENRY CAREY BAIRD,

406 WALNUT STREET.

1866.