Starrett 52848 Feeler Gage 0.01 in Parallel Leaf Steel

Product Description

The STARRETT 52848 is a single parallel-leaf feeler gage designed for precise gap measurement in trade and industrial applications. Machined from tempered steel, the leaf measures 0.01 inches thick, 0.5 inches wide, and 12 inches long, providing consistent, reliable readings across the full leaf length. The parallel leaf profile ensures uniform thickness from end to end, which is critical when checking valve clearances, bearing tolerances, and other tight-tolerance gaps. HVAC technicians, machinists, and industrial mechanics reach for this style of gage when a single dedicated thickness is needed rather than a folding set.

This feeler gage suits residential and commercial maintenance tasks wherever precise gap verification is required. Common applications include checking spark plug gaps, setting valve lash on compressor and engine components, verifying bearing clearances, and confirming alignment tolerances on rotating equipment. The 12-inch leaf length accommodates deep-reach measurement scenarios that shorter blades cannot access. The 0.01-inch thickness is a frequently used reference dimension across HVAC, refrigeration, and general mechanical service work.

Key Features

• Parallel leaf profile maintains uniform 0.01-inch thickness along the full 12-inch length
• Tempered steel construction resists wear and holds calibration under repeated use
• 0.5-inch width provides a stable contact surface for accurate gap seating
• 12-inch length allows deep-reach access in confined assemblies
• Single-blade format eliminates the bulk of a folding set for dedicated-thickness jobs

Compatibility

Designed as a general-purpose parallel-leaf feeler gage suitable for use in HVAC, refrigeration, machining, and industrial mechanical service applications where a 0.01-inch gap reference is required.

Installation Notes

Feeler gages are hand-measuring tools used by machinists, HVAC technicians, and mechanical service professionals. Before taking measurements, clean the leaf and mating surfaces to remove oil, debris, or burrs that could affect accuracy. Insert the leaf with light, even hand pressure — forced insertion can bend or score the blade. After use, wipe the leaf clean and store it flat to prevent warping.