Starrett 52870 Feeler Gage Parallel Leaf Tempered Steel

Product Description

The STARRETT 52870 is a parallel-leaf feeler gage used to measure precise gap clearances in mechanical assemblies, engine components, and machined surfaces. The leaf measures 0.04 millimeters thick, 0.5 inches wide, and 11.81 inches long, giving technicians a consistent reference blade for checking tight tolerances. Constructed from tempered steel, the leaf resists wear and maintains dimensional accuracy through repeated use. This type of feeler gage is a standard tool for machinists, diesel and automotive technicians, HVAC equipment installers, and maintenance professionals who need reliable gap measurement in the field or shop.

Parallel-leaf feeler gages are used wherever a fixed-thickness blade is needed to verify or set clearances — valve lash adjustment, bearing end-play checks, compressor valve plate inspection, and equipment alignment tasks. The 0.04 mm leaf is suited for very fine gap measurement applications. The 300 mm leaf length provides enough reach for recessed or deep-set clearance checks. Suitable for both shop bench work and field service use.

Key Features

• Parallel leaf style for consistent thickness along the full length of the blade
• Tempered steel construction for durability and dimensional stability
• 0.04 mm thickness for precise fine-gap measurement
• 11.81 inch leaf length provides reach for recessed clearance checks
• 0.5 inch blade width offers a stable contact surface

Compatibility

Designed as a standard parallel-leaf feeler gage blade for general mechanical, engine, and equipment maintenance applications requiring a 0.04 mm gap measurement reference.

Installation Notes

Feeler gages are hand tools and require no installation. When using this blade, ensure mating surfaces are clean and free of debris that could affect gap readings. Apply light, consistent drag pressure when sliding the blade into a gap — resistance should be uniform across the full leaf width. Store blades flat or protected to prevent bending, which would compromise accuracy.