Starrett 52867 Feeler Gage 0.029 in Parallel Leaf Steel

Product Description

The STARRETT 52867 is a single-leaf feeler gage used to measure precise clearances and gaps in mechanical assemblies, engine components, valve trains, and equipment undergoing service or alignment work. The leaf measures 0.029 inches thick, 0.5 inches wide, and 12 inches long with a parallel profile, meaning thickness is consistent across the full length. Constructed from tempered steel, this gage resists deformation and maintains calibration accuracy under repeated use in shop and field conditions. Technicians in HVAC, refrigeration, engine service, and general mechanical trades rely on feeler gages like this one for checking tolerances on bearing clearances, spark plug gaps, and similar precision fit applications.

This feeler gage is suited for professional trade use wherever a specific gap or clearance measurement must be verified. The 12-inch length provides reach into deeper assemblies without requiring disassembly. The 0.5-inch blade width offers enough surface contact for stable, repeatable readings. The parallel leaf style makes it straightforward to use in flat-gap applications such as checking motor mount clearances, compressor valve plates, or any component where a consistent thickness is needed across the measurement zone.

Key Features

• Leaf thickness of 0.029 inches for precise gap measurement at that tolerance
• Parallel leaf style maintains uniform thickness along the full 12-inch length
• Tempered steel construction resists bending and holds calibration through repeated use
• 0.5-inch blade width provides stable surface contact during measurement
• 12-inch length reaches into deep assemblies without disturbing surrounding components

Compatibility

Designed as a standard single-leaf feeler gage for use in mechanical, HVAC, refrigeration, and engine service applications requiring a 0.029-inch gap measurement.

Installation Notes

Feeler gages are a hand-measurement tool requiring no installation. When checking clearances, insert the blade with light drag force only — do not force the gage into a gap, as this can spring the leaf and affect accuracy. Clean the blade before and after use to prevent contamination of precision surfaces. Calibrated precision tools should be stored flat and protected from moisture to maintain accuracy over time.