Starrett 57087 Tapered Feeler Gage Set 13 Piece

Product Description

The STARRETT 57087 is a 13-piece tapered feeler gage set designed for precision gap measurement in light fabrication, engine service, equipment alignment, and general mechanical inspection. Each leaf is manufactured from tempered steel and tapers from 7 millimeters to 12.7 millimeters in width, giving technicians a wider bearing surface as the blade is inserted into a gap. The set spans a measurement range of 0.03 mm to 0.50 mm across 13 individual leaves, all measuring 77 mm in closed length. Machinists, diesel mechanics, HVAC technicians, and equipment service professionals rely on feeler gage sets like this one for valve clearance checks, bearing fits, and tight-tolerance fitting work.

This set is suited for applications where tapered blades offer an advantage over parallel-style leaves, particularly when measuring stepped or angled gaps or when a snug fit must be verified across a narrow opening. The graduated thickness increments — stepping from 0.03 mm through 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.15, 0.20, 0.30, 0.40, and 0.50 mm — allow technicians to walk up to the correct clearance quickly. The compact 77 mm closed length makes the set manageable in confined workspaces such as engine bays and equipment panels.

Key Features

• 13 tapered leaves covering 0.03 mm to 0.50 mm in a single set
• Tempered steel construction for durability and resistance to bending under load
• Tapered blade profile widens from 7 mm to 12.7 mm for reliable gap seating
• 77 mm leaf length suits confined access points
• Graduated increments allow fast step-up to correct clearance without overgapping

Compatibility

Designed as a general-purpose tapered feeler gage set suitable for valve clearance measurement, bearing inspection, and gap fitting across a wide range of mechanical and HVAC service applications.

Installation Notes

Feeler gages are a hand-measurement tool and require no installation. Wipe leaves clean of oil and debris before use to ensure accurate readings. Insert the blade gently without forcing it; a correct-fit leaf should slide with slight drag, not bind. Store leaves flat and avoid kinking, which can permanently alter thickness and compromise measurement accuracy.