Starrett 52864 Feeler Gage 0.026 in Parallel Leaf Steel

Product Description

The STARRETT 52864 is a single-blade parallel leaf feeler gage used for measuring precise gaps and clearances in mechanical assemblies. The blade measures 0.026 inches thick, 0.5 inches wide, and 12 inches long with a parallel leaf profile that maintains consistent thickness along the full length. Constructed from tempered steel, it delivers the stiffness and wear resistance required for repetitive use in demanding shop and field environments. HVAC technicians, millwrights, and mechanical contractors reach for feeler gages like this when setting valve clearances, checking bearing fits, measuring spark plug gaps, or verifying alignment tolerances during equipment installation and service.

This feeler gage is suited for both residential and commercial mechanical work. Common applications include setting furnace heat exchanger clearances, checking blower wheel shaft play, verifying compressor valve clearances, and confirming proper fitment during pump or motor assembly. The 12-inch blade length provides reach into confined spaces without requiring disassembly of surrounding components, making it practical for in-place service work on installed equipment.

Key Features

• Parallel leaf profile maintains uniform 0.026-inch thickness across the full 12-inch blade length
• Tempered steel construction resists flex and wear under repeated use
• 0.5-inch blade width provides stable contact surface for accurate gap readings
• 12-inch length allows reach into deep or restricted clearance areas
• Single-blade format for quick identification and deployment on the job

Compatibility

Designed as a standard parallel leaf feeler gage for general mechanical gap measurement tasks across HVAC, plumbing, and industrial equipment service applications.

Installation Notes

Feeler gages are used by licensed HVAC technicians, millwrights, and mechanical contractors as a measurement instrument rather than an installed component. Power down or de-energize equipment before inserting the blade into any gap near moving parts or energized terminals. Keep blades clean and free of oil contamination that could affect gap readings. Do not force a blade into a gap smaller than its rated thickness, as this can permanently deform the blade and compromise future measurements.