Book

This is a book entitled "Audel's Engineers and Mechanics Guide 4". It was written by Frank D. Graham and published by Theo. Audel & Co. in New York in 1921. The book has a soft cover that is made of black fabric. The front cover has debossed texts that read "AUDEL'S ENGINEERS AND MECHANICS GUIDE 4// QUESTIONS ANSWERS AND ILLUSTRATIONS// LOOK WITHIN". There is an debossed symbol of the horizon and the sun on the central bottom of the front cover. The back cover has a plain black surface. The spine has the book title on the top, a printed gold text that reads "GASOLINE// OIL// ENGINES// PRODUCERS// AVIATION" on the middle lower part, and a gold diamond-shaped symbol on the bottom. On the first page inside the front cover, there is a stamp from the Pump House Steam Museum, and a hand-written note in pencil that reads "99205/12" on the bottom edge. In front of the cover page, there is a diagram of the elementary double ignition system for four cylinder automobile engine. On the cover page is the book title in cream-coloured texts against a black background, it reads "AUDEL'S ENGINEERS AND MECHANICS GUIDE 4// A PROGRESSIVE ILLUSTRATED SERIES WITH QUESTIONS ANSWERS CALCULATIONS". This book aims to teach modern engineering practices to all engineers, mechanics, electricians, and students who work in the engineering profession. As Guide 4 of the series, it has information on gas, gasoline, oil, semi and full diesel engines. There is also an instruction of how to select an engine.