Fowler - RECTANGULAR Gage Block Sets - Steel - (Inch & Metric)

Features—No. 53-671 Series:

• Constructed of a special steel of high carbon & chrome content, hardened to 65RC, ensures hard wear resistance and stability.
• Manufactured under carefully controlled conditions to ensure maximum accuracy, parallelism and flatness.
• Calibrated to Fowler specifications which meet or exceed ASME B89.1.9-2002.
• Sets include certification traceable to the National Institute of Standards & Technology.
• Surface finish: .4 millionths (.01 microns).

Features—No. 53-670 Series:

• Each block is rectangular steel and hardened to 65RC, stress relieved, lapped to accurate size, parallelism and flatness, then carefully inspected and marked for size; designed to meet close tolerances.
• Each set includes standard sizes found in more expensive sets. Each block individually serialized; conforms to rigid standards of the National Institute of Standards & Technology.