Spi 17-990-3 Dial Caliper 8 Inch Stainless Steel Nist

Product Description

The SPI 17-990-3 is a stainless steel dial caliper with an 8-inch measurement range and a dial graduation of 0.001 inches. Accuracy is rated at 0.0015 inches, making it a reliable choice for precise dimensional checks in the field or shop. The black-faced dial advances 0.1 inches per revolution, allowing for quick and confident readings. Capable of outside, inside, depth, and step measurements, this caliper covers the core measurement tasks a technician encounters during fabrication, installation, or quality inspection. It ships calibrated and NIST traceability certified, ready for immediate use.

The 17-990-3 is suited for trade professionals and precision technicians who need a dependable analog caliper for layout, fitting verification, and component inspection. With a 1.97-inch jaw length and stainless steel construction throughout, it handles the demands of HVAC, plumbing, electrical, and general mechanical trades. The included fitted case protects the instrument during transport and storage on the job site or in a service vehicle.

Key Features

• 8-inch measurement range covers most standard trade measurement needs
• 0.001-inch dial graduation with 0.0015-inch accuracy for precise readings
• Performs outside, inside, depth, and step measurements
• Stainless steel body and jaws for corrosion resistance and durability
• NIST traceability certified and calibrated right out of the box
• Includes fitted protective case for storage and transport

Compatibility

Designed as a general-purpose dial caliper for trade and shop use where analog dial readout and NIST-traceable calibration are required.

Installation Notes

No installation is required. Before first use, verify the caliper closes fully to zero and that the dial bezel is locked securely. Keep the measuring faces clean and free of debris to maintain accuracy. Store in the included fitted case when not in use to protect the dial mechanism and measuring faces.