Precise Rectangular Gage Block Set-Metric 

Grade 0 (2) Metric 0.5 thru 100mm 87 PC Set, Steel

• Metric Gage Block Set
• 87 pieces.
• 0.5mm thru 100mm.
• Each block is steel and hardened to 65RC, stress relieved, lapped to accurate size, parallelism & flatness, then carefully inspected and marked for size designed to meet close tolerance. 
• Each set includes standard sizes found in more expensive sets. Each block individually serialized and conforms to the rigid standards of the National Bureau Of Standards. 

Grade 3 tolerances = +8, -4 millionths.