Steel Angle Gage, 1 - 45 Deg Range, 18 Leaves. Angle Gage is a convenient, timesaving tool for inspectors, toolmakers, and diesinkers when checking angles. This tool also replaces a protractor in many instances. The gage has 18 leaves, each with a different angle including 14-1/2 Deg (1/2 the Acme Standard of 29 Deg). Leaves are made of the finest spring-tempered steel and both the angle edge and two sides are ground. The gage is approximately 9/32" thick, 1-1/16" wide and 4-3/16" long.