2274-4

Combination square set, center head (made of cast iron): to locate center of cylinders with diameter 30-100 mm accuraccy: ±0.15 mm, protactor head (made of cast iron): set the blade at desired angle to an edge of a workpice, and can be used to measure angels range: 0-180°, square head (made of cast iron): set the lade at 90°or 45° to an edge of workpiece accuracy: ±8 min for 90°square, ±10 min for 45°square, blade (made of stainless steel): range: 300 mm/12", graduation: 0.5 mm and 1/32" on front face, 1 mm and 1/64" on back face, optional accessory: rigid rule code 7113