The Starrett 466 Angle Gage is a convenient, time-saving tool for inspectors, toolmakers and die-sinkers when checking angles. This tool also replaces a protractor in many instances. The gage has 18 leaves, each with a different angle including 14-1/2º (1/2 the Acme Standard of 29º). Leaves are made of the finest spring-tempered steel and both the angle and two sides are ground. Approximately 9/32" thick, 1-1/16" wide and 4-3/16" long.