Spi 15-003-7 Steel Gage Block Set Grade 0 8 Piece

Product Description

The SPI 15-003-7 is an 8-piece rectangular steel gage block set manufactured to Grade 0 accuracy. The set covers a range of 5 to 20 inches and is certified with NIST traceability, making it suitable for high-precision dimensional measurement, calibration, and inspection work. Each block is individually serialized for full traceability in quality-controlled environments. Tolerances across the set range from 0.000007 to 0.00004 inches depending on the specific block size, meeting the demands of metrology labs, toolrooms, and manufacturing inspection departments.

This set is intended for applications requiring precise length standards in inch measurement. It is suited for calibrating measurement instruments, setting up machine tool offsets, and verifying part dimensions in industrial manufacturing, toolroom, and quality assurance environments. The Grade 0 classification indicates a high level of accuracy appropriate for standards-room and master-grade inspection use. Metrologists, quality technicians, and precision machinists are the primary users of this product.

Key Features

• Grade 0 accuracy classification for master-level measurement applications
• NIST traceability certification included with the set
• Each block individually serialized for documentation and audit traceability
• Rectangular form factor for stable wringing and stacking
• Steel construction for durability and dimensional stability
• Tolerances ranging from 0.000007 to 0.00004 inches across the set

Compatibility

Designed as an OEM-style precision standard for use with any inch-based dimensional measurement or calibration system requiring Grade 0 rectangular gage blocks in the 5 to 20 inch range.

Installation Notes

Gage blocks should be handled by metrology technicians or quality personnel trained in proper wringing and storage procedures. Blocks must be kept clean and free of burrs or corrosion before use; always clean contact surfaces with an appropriate solvent and lint-free cloth prior to wringing. Store blocks in the provided case when not in use and maintain environmental conditions per your lab or toolroom calibration control plan. Recalibrate on a schedule consistent with your quality management system requirements.