Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
Insize 7118-300, PRECISION STRAIGHT EDGE WITH BEVELED EDGE, 12", 6928640319945
Insize 6883-4, GAGE BLOCK HOLDER, .6-.8", 6928640348402
3M 65487, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH560TRI-10T, 5 IN x UH, 60, 7100202913, 10 per pack
Insize 7118-300, PRECISION STRAIGHT EDGE WITH BEVELED EDGE, 12", 6928640319945
Insize 6883-4, GAGE BLOCK HOLDER, .6-.8", 6928640348402
3M 65487, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH560TRI-10T, 5 IN x UH, 60, 7100202913, 10 per pack
Parallelism:30_in/per inch.
Squareness: 50_in/per inch.
Made of alloy steel
Hardness HRC56-58
