Mechanical Draughting

The Student's Illustrated Guide to Practical Draughting. - A series of Practical Instructions for Machinists, Mechanics, Apprentices, and Students at Engineering Establishments and Technical Institutes. - By T. P. Pemberton, Draughtsman and Mechanical Engineer. - illustrated by numerous engravings. - Cloth, gilt. $1 This is a simple but thorough book, by a draughtsman of twenty-five years' experience. It is intended for beginners and self-taught students, as well as for those who pursue the study under the direction of a teacher.

Drawing Instruments

Being a Treatise on Draughting Instruments, with Rules for their Use and Cure; Explanations of Scales. Sectors, and Protractors. Together with Memoranda for Draughtsmen; Hints on Purchasing Instruments, Paper, Ink, Pencils, etc. Also, a Price-list of all Materials required by Draughtsmen. - Illustrated with twenty-four Explanatory Illustrations. - By Fred. T. Hodgson. - Paper. ... 25 cents.

The Slide-Rule, And How To Use It

Being a Compilation of Explanations, Rules, and Instructions, suitable for Mechanics and others interested in the Industrial Arts. - Compiled and arranged by Fred. T. Hodgson. - 25 cents.

Rules are given for the measurement of all kinds of hoards and planks, timber in the round or square, glaziers' work and painting, brickwork, paviors' work, tiling and slating, the measurement of vessels of various shapes, the wedge, inclined planes, wheels and axles, levers, the weighing and measurement of metals and all solid bodies, cylinders, cones, globes, octagon rules and formulae, the measurement of circles, and a comparison of French and English measures,with much other information useful to builders, carpenters, bricklayers, glaziers, paviors, slaters, machinists, and other mechanics.

Possessed of this little book and a good slide-rule, mechanics might carry in their pockets some hundreds of times the power of calculation that they now have in their heads, and the use of the instrument is very easily acquired.

The Engineer's Slide-Rule, And Its Applications

A Complete Investigation of the Principles upon which the Slide-Rule is constructed; together with the Method of its Application to all the Purposes of the Practical Mechanic. - By William Tonkes. - Paper...............25 cents.

The Lightning Calculator. Practical Hints On Lightning Calculating

To which are added Rules, Tables, Data, Formulae, and Memoranda, for making rapidly those everyday calculations that are required in business, mechanics, and agriculture. - Paper..........20 cents.

A Century Of Inventions

An exact reprint of the famous "Century of Inventions" of the Marquis of Worcester (first published in 1663). - With an Introduction, Notes, and a Life of the Author. - With Portrait after a Painting by Van Dyke. - Edited by John Phin. - Cloth. . . . $1

This is one of the most extraordinary books ever published. The famous "Century of Inventions" is of more than mere historical interest. It contains numerous hints and suggestions of what might be accomplished, and will be found of great interest and value to every one interested in mechanics. Many persons claim that the Marquis of Worcester anticipated many of our most important modern inventions and discoveries. Great care has been taken to reproduce exactly (so far as modern type, etc, could do it) the edition published by the Marquis himself. It has been entirely out of print for many years.