Spi 15-095-3 Rectangle Steel Gage Block 12 in Grade AS-1

Product Description

The SPI 15-095-3 is a rectangular steel gage block measuring 12.00000 inches, manufactured to Grade AS-1 accuracy. Gage blocks are precision reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances on the shop floor or in a metrology lab. This block includes NIST certification, confirming its dimensional accuracy has been verified against national measurement standards. At 1 pound, the block is substantial enough for stable referencing without being unwieldy. Grade AS-1 represents a high-accuracy classification suitable for demanding inspection and calibration work in industrial and manufacturing environments.

This gage block is intended for use in precision measurement applications including tool and die, machining, quality control inspection, and calibration lab environments. It serves as a master reference for setting up measurement equipment, qualifying fixtures, or verifying the accuracy of other gages. The 12.00000 inch nominal size makes it well suited for applications requiring large-dimension referencing that smaller block sets cannot achieve individually.

Key Features

• Grade AS-1 accuracy classification for high-precision measurement and calibration work
• 12.00000 inch nominal size for large-dimension reference applications
• Steel construction for durability and dimensional stability
• Includes NIST certification verifying conformance to national measurement standards
• Single-block format for direct use as a standalone reference standard

Compatibility

Designed as an OEM-style replacement or supplemental reference standard compatible with standard gage block accessories including holders, jaws, and scribing attachments designed for rectangular steel gage blocks.

Installation Notes

Gage blocks should be handled by qualified metrology technicians or precision machinists familiar with wringing techniques and proper block care. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Clean contact surfaces with an appropriate gage block cleaning solution before and after use. Avoid dropping or striking the block, as impact can permanently alter dimensional accuracy.