MACHINERYS REFERENCE SERIES. NUMBER 64- GAGE MAKING AND LAPPING. In the following pages of this book are compiled a number of articles relating to gage making and lapping. These articles have been contributed from time to time to Machinery by various writers. In some cases the opinions expressed differ slightly as to the best practice, each writer describing the methods with which he personally has had most experience or best success. CONTENTS Principles of Gage Making, by F. E. SHAILOR. The Manufacture of Gages. Lapping Flat Work and Gages, by F. E. SHAILOR. The Rotary Lap, by A. J. DELILLE. MiscelIaneous Laps and Lapping Operations. Originally published in 1910. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.