• Brand: STM
• Type: Gauge Block Set
• Accuracy Grade: B
• Minimum Size (Decimal Inch): 0.05
• Maximum Size (Inch): 4
• Number of Pieces: 81
• Shape: Rectangular
• Material: Steel
• All blocks are manufactured to the same high standards as our premium sets
• Each set is supplied with a certificate guaranteeing that each block is manufactured to meet or exceed federal spec GGG-G-15C, and is within tolerance (±0.000050)
• This certificate does not show the individual deviation of each block
• Each set is provided in a fitted wooden case
