SCREW-THREADS,

And Methods of Producing Them. With numerous Tables and complete Directions for using Screw-Cutting Lathes. By Paul N. Hasluck, Author of “Lathe-Work,” &c. With Seventy-four Illustrations. Fifth Edition. Waistcoat-pocket size

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“Full of useful information, hints and practical criticism. Taps, dies, and screwing tools generally are illustrated and their actions described.”—Mechanical World.

“It is a complete compendium of all the details of the screw-cutting lathe; in fact a multum-in-parvo on all the subjects it treats upon.”—Carpenter and Builder.

TABLES AND MEMORANDA FOR ENGINEERS, MECHANICS, ARCHITECTS, BUILDERS, &c.

Selected and Arranged by Francis Smith. Sixth Edition, Revised, including Electrical Tables, Formulæ, and Memoranda. Waistcoat-pocket size, limp leather.

[Just Published. 1/6

“It would, perhaps, be as difficult to make a small pocket-book selection of notes and formulæ to suit ALL engineers as it would be to make a universal medicine; but Mr. Smith’s waistcoat-pocket collection may be looked upon as a successful attempt.”—Engineer.

“The best example we have ever seen of 270 pages of useful matter packed into the dimensions of a card-case.”—Building News.

“A veritable pocket treasury of knowledge.”—Iron.