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The GENERAL 1478 is a battery-powered electronic caliper designed for precise dimensional measurement in trade and industrial applications. It measures up to 8.0 inches (203 millimeters) with a resolution of 0.016 inches and an accuracy of 0.001 inches. The caliper body and jaws are constructed from stainless steel, providing corrosion resistance and long-term durability in shop and field environments. Jaw adjustment is handled via a thumb wheel for controlled, repeatable positioning. The unit ships with a silver oxide SR44 battery installed and a protective case. Licensed tradespeople, machinists, pipefitters, and HVAC technicians use this tool when tight dimensional tolerances are required.
The GENERAL 1478 is suited for residential and commercial trade work wherever accurate inside diameter, outside diameter, depth, and step measurements are needed. The knife-edge jaw style allows access to narrow grooves and recessed features that standard flat jaws cannot reach. A dedicated depth rod extends from the base of the caliper for direct depth measurement without a separate tool. The included inside diameter jaws handle bore and ID measurements in a single instrument, reducing the number of tools needed on the job.
Designed as a general-purpose electronic caliper suitable for HVAC, plumbing, pipefitting, machining, and related trade measurement applications requiring inside diameter, outside diameter, depth, and step readings up to 8.0 inches.
No installation is required. Before use, verify the caliper zeroes correctly with jaws fully closed. Replace the SR44 silver oxide battery when the display dims or readings become inconsistent. Store the caliper in the included case to protect the jaws and measuring surfaces from damage and contamination.
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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