Precise 8 Piece Long Gage Block Set (GRADE 1)

• 8 Pieces 5", 6", 7", 8", 10", 12", 16", 20".
• Meets Federal Specifications GGG-G-15C Tolerances on length for inch gage blocks.
• Each set is supplied with a Calibration Certificate. Traceable to N.I.S.T.