Combination Square Set Protractor

Combination Square Set Protractor SERIES 817 Combination Square Set, a versatile and essential tool used in various trades, including carpentry, metalworking, and engineering. It is designed to perform multiple functions, such as measuring angles, checking for squareness, and marking workpieces. The combination square set includes a ruler, a square head, a protractor head and a center head, all of which can be attached to the ruler to perform different tasks. Protractor (made of cast iron), only for 817-180-02: Used to set an angle or angle measurement, measuring range: 0-180°, accuracy: ±20' Square (made of cast iron): Used as 90° square or 45° square accuracy of 90° square: ±8', accuracy of 45° square: ±10' Blade (made of stainless steel): Used as rule, measuring range: 300mm/12' front side graduation: 0.5mm and 1/32' reverse side graduation: 1mm and 1/64' Used as rule, measuring range: 600mm/24' front side graduation: 0.5mm and 1/32' reverse side graduation: 1mm and 1/64' Center finder (made of cast iron), only for 817-090-13 and 817-180-02: To locate center of cylinders with diameter (Ød): 30-100mm, accuracy: ±0.15mm