GZ01011 – Groz 4pc Precision Engineers Square Set 50 75 100 & 150mm Hardened spring steel blades are permanently fixed to the stock by means of tapered self locking rivets which ensure complete rigidity. Both the blade and stock are precisely ground to ensure straightness and parallelism. Working edges of the blades are lapped which further enhances accuracy. A groove on the inner corner of the stock aids in the clearance of burr or dirt. Set Consists of: One each of 2 (50mm) 3 (75mm) 4 (100mm) & 6 (150mm) Squares