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The SPI 15-809-7 is a three-piece Shore D scale calibration test block kit used to verify and calibrate Shore D durometers across a hardness range of 20 HSD to 90 HSD. Shore D hardness testing applies to harder rubber compounds, rigid plastics, and similar materials. This kit gives technicians, quality control inspectors, and metrologists a set of reference standards to confirm instrument accuracy before and during testing operations. The three blocks span the low, mid, and high ends of the D scale, making the kit suitable for a broad range of material testing environments. At 1 pound, the kit is compact and easy to store in a lab or field toolbox.
This calibration kit is used in quality assurance labs, manufacturing facilities, and field inspection settings where Shore D durometers must meet traceable accuracy standards. It is appropriate for any operation that tests hard rubber, rigid thermoplastics, hard waxes, or similar materials. The three-piece format supports multi-point verification across the instrument range rather than a single-point check, which is standard practice for calibration procedures in precision metrology workflows.
Designed for use with Shore D scale durometers as reference standards for instrument calibration and verification. No specific instrument model compatibility was stated in the product data.
Calibration test blocks require no installation. Store blocks on a clean, flat surface away from solvents, oils, and direct sunlight to preserve surface integrity. Handle reference blocks carefully to avoid surface damage that could affect hardness readings. Calibration procedures should follow the applicable ASTM or ISO standard for Shore D durometer verification as required by your quality system.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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