Watch and clock escapements; . he only thoroughly reliable and exhaustivetreatise published on this important subject. It is an ideal text-book, beginning with the rudiments and leading the student stepby step to a complete and practical mastery of the art. Back ofthe authorship is a long experience as a successful engraver, alsoa successful career as an instructor in engraving. These qualifica-tions ensure accuracy and reliability of matter, and such a courseof instruction as is best for the learner and qualified engraver. The most notable feature of the new treatise is the instruc-tive chara
Watch and clock escapements; . he only thoroughly reliable and exhaustivetreatise published on this important subject. It is an ideal text-book, beginning with the rudiments and leading the student stepby step to a complete and practical mastery of the art. Back ofthe authorship is a long experience as a successful engraver, alsoa successful career as an instructor in engraving. These qualifica-tions ensure accuracy and reliability of matter, and such a courseof instruction as is best for the learner and qualified engraver. The most notable feature of the new treatise is the instruc-tive character of the illustrations. There are over 200 originalillustrations by the author. A very complete index facilitatesreference to any required topic. Bound in Silk Cloth—208 Pages and 216 Illustrations. Sent postpaid to any part of the world on receipt of price,$ (6s. 3d.) published by The Keystone, THE ORGAN OF THE JEWELRY AND OPTICAL. TRADES, 19TH & Brown Sts., Philadelphia, THE KEYSTONE PORTFOLIOOF MONOGRAMS. This portfolio contains 121 com-bination designs. These designswere selected from the best of thosesubmitted in a prize competitionheld by The Keystone, and will befound of value to every one doingengraving. The designs are conceded to bethe best in the market, excelling inart and novelty of combination andskill in execution. They are printed from steel plateson stiff, durable paper, and containsample monograms in a variety ofcombinatious. The portfolio is a bench require-ment that no jeweler can afford to bewithout. It is a necessary supple-ment to any text-book on letterengraving. Price, 50 Cents (2s.
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Keywords: ., bookcentury1900, bookdecade1900, bookidwatchclockes, bookyear1904
