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The SPI CMS170309006 is a stainless steel vernier caliper designed for precise linear measurement in trade and industrial applications. It reads from 0 to 5.2 inches (0 to 130 mm) with an accuracy of 0.001 inches and a graduation of 0.001 inches (0.02 mm), making it suitable for work that demands tight tolerances. The jaw depth of 1.57 inches allows measurement of deeper features such as slots, recesses, and stepped workpieces. The tool ships NIST-traceable calibration certification included, which satisfies documentation requirements in quality-controlled environments. It is used by HVAC technicians, pipefitters, machinists, and maintenance trades wherever precise component measurement is required.
This caliper is appropriate for both shop and field use. The stainless steel construction resists corrosion and wear under regular service conditions. The dual set screws allow the jaw to be locked securely at a measured position, which is useful when transferring measurements or checking multiple identical parts. The included case protects the tool during transport and storage. This caliper suits residential and light commercial trade applications where a reliable, calibrated hand measurement tool is needed for component sizing, gap checking, or fitment verification.
Designed as a general-purpose vernier caliper suitable for trade and industrial measurement tasks requiring a 0 to 5.2 inch range and NIST-traceable calibration.
A licensed or qualified technician should verify NIST calibration documentation upon receipt and retain it for quality records. Before use, clean contact surfaces to remove debris that could affect reading accuracy. Do not overtighten the set screws, as this can distort the jaw or damage the beam. Store the caliper in the included case when not in use to protect the measuring surfaces.
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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