Starrett 50650 Tapered Feeler Gage Set 9 Piece

Product Description

The STARRETT 50650 is a 9-piece tapered feeler gage set designed for precise gap measurement in mechanical and industrial applications. Each leaf is manufactured from tempered steel, providing the rigidity and surface finish required for accurate readings. The set covers a thickness range of 0.0015 to 0.015 inches across nine graduated leaves, making it suitable for checking valve clearances, spark plug gaps, bearing fits, and other close-tolerance measurements. The tapered leaf profile allows access to restricted or angled clearances where a parallel blade would not seat properly. HVAC technicians, millwrights, mechanics, and precision tradespeople reach for this set during service and calibration tasks.

The STARRETT 50650 is appropriate for residential and commercial service work wherever close-tolerance gap checks are required. Common applications include motor and compressor valve clearance verification, alignment checks on HVAC and refrigeration equipment, and general mechanical fitting work in the field or shop. The tapered leaf design is particularly useful when measuring gaps that vary in width or when inserting the blade at an angle. Nine distinct thickness steps allow technicians to bracket and dial in an exact gap measurement without guesswork.

Key Features

• Nine tapered leaves covering 0.0015 to 0.015 inches in graduated steps
• Tapered leaf profile for access to angled or restricted clearances
• Tempered steel construction for durability and accurate, repeatable readings
• Leaf length of approximately 3.03 inches for reach into confined spaces
• Leaf width tapers from 1/4 inch to 1/2 inch, aiding gap-entry and seating
• Nine individual thickness steps: 0.0015, 0.0020, 0.0030, 0.0040, 0.0060, 0.0080, 0.0100, 0.0120, and 0.0150 inches

Compatibility

Designed as a general-purpose tapered feeler gage set suitable for close-tolerance gap measurement tasks across HVAC, refrigeration, plumbing, and general mechanical service applications.

Installation Notes

Feeler gages should be inserted into a gap with light, consistent hand pressure — forcing a blade can spring or distort the leaf and compromise future readings. Always clean leaf surfaces before use; oil, debris, or burrs will affect measurement accuracy. Store leaves folded and the set secured to prevent nicks to the blade edges. No special tools or power shutdowns are required for the gages themselves, but follow all applicable lockout and shutoff procedures for the equipment being measured.