Parallelism: 40_in per inch.
Squareness: 60_in/per inch.
Made of alloy steel
Hardness HRC56-58.
Insize 4001-20E, CYLINDER GAGE BLOCK, 20", 6928640358814
Insize 4001-20E, CYLINDER GAGE BLOCK, 20", 6928640358814
Parallelism: 40_in per inch.
Squareness: 60_in/per inch.
Made of alloy steel
Hardness HRC56-58.
