Spi 91-363-2 Feeler Gauge 0.01 in Parallel Leaf Steel

Product Description

The SPI 91-363-2 is a parallel-leaf feeler gauge used to measure precise gaps and clearances in mechanical assemblies. The leaf measures 0.01 inches thick, 0.5 inches wide, and 12 inches long, providing consistent contact across the full length of the blade. Constructed from high carbon steel, the leaf resists wear and holds its calibrated thickness through repeated use. This gauge is a standard hand tool for HVAC technicians, plumbers, mechanics, and industrial service professionals who need accurate gap measurement during equipment setup, inspection, or adjustment.

Feeler gauges of this type are used across a wide range of trade applications including burner-to-orifice gap checks, valve clearance measurement, flange alignment verification, and component fit inspection. The 12-inch parallel leaf length makes it suitable for reaching into tight assemblies or across wider surfaces where a shorter blade would not make full contact. This single-leaf gauge is sold individually and is compatible with standard feeler gauge holders where applicable.

Key Features

• Calibrated thickness of 0.01 inches for precise gap measurement
• Parallel leaf style ensures uniform contact along the full 12-inch length
• High carbon steel construction for durability and dimensional stability
• 0.5-inch blade width provides adequate surface contact in most service applications
• Single-leaf format for use alone or as a replacement in a feeler gauge set

Compatibility

Designed as a standard parallel-leaf feeler gauge suitable for general mechanical gap measurement applications across HVAC, plumbing, and industrial service trades.

Installation Notes

Feeler gauges require no installation but should be handled with care to avoid bending or kinking the leaf, which will compromise measurement accuracy. Clean the blade and the surfaces being measured before use to prevent debris from affecting readings. Store the gauge flat or in a protective case to maintain its calibrated thickness over time.