Issued to someone just inside the front cover. The Trigonometry Tables booklet published by Cincinnati Gear Company is a valuable resource for individuals in the metalworking industry. This booklet focuses on trigonometry, providing essential tables for calculations and problem-solving. Made in the United States, this booklet is a practical tool for those working with CNC machines, metalworking equipment, and manufacturing processes. With detailed trigonometric tables and information, this booklet is a valuable addition to any metalworker's library.