12" Combination Protractor Tri Square Angle Ruler Machinist Measuring Tools US,Measuring Tools US 12" Combination Protractor Tri Square Angle Ruler Machinist, square and protractor heads, 1 x Stainless Steel Combination Square, A great combination set for professionals and hobbyists, Size: approx,30,5cm x 11,5cm/ 12" x 4,5", Material: stainless steel,Center, Wholesale Price Authentic Guaranteed A variety of unusual and unique products. Machinist Measuring Tools US 12" Combination Protractor Tri Square Angle Ruler.