Spi 91-379-8 Feeler Gage 0.026 in Parallel Leaf

Product Description

The SPI 91-379-8 is a single parallel-leaf feeler gage designed for precise gap and clearance measurement in mechanical and HVAC service applications. The leaf measures 0.026 inches thick, 0.5 inches wide, and 12 inches long, providing a consistent measurement surface along its full length. Constructed from high carbon steel, the leaf resists wear and holds dimensional accuracy through repeated use. Technicians use feeler gages like this one to verify tolerances on burner orifice gaps, valve clearances, bearing fits, and similar precision-fit checks during installation and maintenance work.

This feeler gage is suited for trade professionals who need a reliable single-blade reference for tight clearance verification. The 12-inch parallel leaf format works well in confined spaces common to HVAC equipment, refrigeration compressors, and mechanical assemblies where a consistent blade width across the full length is necessary for accurate seating. The 0.026-inch thickness covers a common gap specification found in many service procedures across residential and light commercial equipment.

Key Features

• Parallel leaf style maintains uniform 0.026-inch thickness along the full 12-inch length
• High carbon steel construction provides durability and dimensional stability
• 0.5-inch blade width offers a stable contact surface for accurate gap checks
• Single-leaf format for quick, dedicated use at a fixed tolerance
• 12-inch length accommodates deep-reach measurement needs

Compatibility

Designed as a standard single-leaf feeler gage for general-purpose gap and clearance measurement in HVAC, mechanical, and related trade service applications.

Installation Notes

Feeler gages are hand-use precision tools and require no installation. Power down or de-energize any equipment before inserting a feeler gage into an active mechanical assembly. Keep the blade clean and free of oil or debris before use to avoid false readings. Store flat to prevent warping and preserve measurement accuracy.