Spi 31-170-4 Electronic Caliper 0-8 in Stainless Steel

Product Description

The SPI 31-170-4 is a battery-powered electronic caliper designed for precise dimensional measurement in trade and industrial settings. It covers a measurement range of 0 to 8 inches with a resolution of 0.0005 inches and an accuracy of 0.0015 inches, making it suitable for close-tolerance work in HVAC, plumbing, electrical, and general mechanical applications. The body and jaws are constructed from hardened stainless steel for corrosion resistance and long service life. An offset jaw configuration allows inside diameter measurements up to 8 inches. Power is supplied by a standard LR44 battery.

This caliper is well suited for field and shop use where accurate linear and inside diameter measurements are required. The offset jaw design expands its usefulness for measuring pipe bores, fittings, and other cylindrical components common in plumbing, HVAC, and pool service work. It is a practical tool for technicians who need reliable dimensional verification during installation, fabrication, or component replacement tasks.

Key Features

• Measurement range: 0 to 8 inches with 0.0005 inch resolution
• Accuracy rated at 0.0015 inches for close-tolerance applications
• Hardened stainless steel body and jaws for durability and corrosion resistance
• Offset jaw style with inside diameter measurement capability up to 8 inches
• Battery-powered operation using a standard LR44 cell
• No data output port — standalone readout instrument

Compatibility

Designed as a general-purpose electronic caliper suitable for trade and industrial measurement applications requiring up to 8 inches of range and stainless steel construction.

Installation Notes

No installation is required for this hand tool. Before use, verify the caliper zeroes correctly with jaws fully closed. Keep the measuring surfaces clean and free of debris to maintain accuracy. Store away from moisture and magnetic fields to protect the electronic components and ensure consistent readings.