Precise 81 Piece Rectangular Gage Block Set

Grade AS-2 (B)tolerance = .000050″.

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.

• 9 Blocks = .1001-.1009″ Step = .0001″
• 49 Blocks = .101-.149″ Step = .001″
• 19 Blocks = .05-.95″ Step = .05″
• 4 Blocks = 1-4″ Step = 1″