Starrett 52872 Feeler Gage Parallel Leaf Tempered Steel

Product Description

The STARRETT 52872 is a single-leaf feeler gage used to measure and verify small gaps, clearances, and tolerances in mechanical assemblies. The leaf measures 0.06 mm (approximately 0.0024 inches) thick, 12.7 mm (0.5 inches) wide, and 300 mm (11.81 inches) long. The parallel leaf profile provides consistent thickness along the full length of the blade, which is essential for accurate readings across the entire contact surface. Constructed from tempered steel, the blade resists deformation and wear during repeated use. Machinists, engine builders, HVAC technicians, and industrial maintenance professionals use this gage for precision fitment verification.

This feeler gage is suited for checking valve clearances, spark plug gaps, bearing tolerances, brake pad clearances, and similar close-tolerance applications in both shop and field environments. The 300 mm blade length provides reach into recessed areas where shorter blades cannot access. The 0.06 mm thickness fills a standard incremental position in a professional gage set, making it a common replacement or supplemental blade for technicians who need that specific measurement.

Key Features

• Parallel leaf profile ensures uniform thickness from end to end for consistent measurement
• Tempered steel construction resists bending and wear under repeated use
• 0.06 mm blade thickness for fine-tolerance gap verification
• 300 mm blade length provides extended reach into deep or recessed assemblies
• 12.7 mm blade width provides a stable contact surface during measurement

Compatibility

Designed as a standard parallel-leaf feeler gage blade suitable for general mechanical, automotive, and industrial gap-measurement applications where a 0.06 mm thickness is required.

Installation Notes

A licensed technician or qualified mechanic should verify the gap specification required before selecting a gage leaf. Wipe the blade clean before and after use to prevent contamination that could affect measurement accuracy. Do not force or bend the blade into a gap narrower than the rated thickness, as this will permanently deform the leaf and invalidate future readings. Store blades flat or in a protective case to maintain flatness and prevent corrosion.