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The STARRETT 53040 is a double end feeler gage holder designed to secure individual feeler gage leaves or strips during precision gap and clearance measurement work. The holder accepts single leaves or strips ranging from 0.03 to 0.5 mm in thickness, providing a stable grip for accurate readings. Measuring 5.25 inches in length and 0.56 inches in width, the 53040 is compact enough for tight-access applications. Weighing 0.5 pounds, it is a lightweight, handheld tool suited for use by machinists, HVAC technicians, automotive technicians, and other trade professionals who perform regular tolerance and clearance checks.
The STARRETT 53040 is used in applications where precise gap measurement is required, including valve clearance checks, bearing clearance verification, machined surface inspections, and HVAC equipment servicing. The double end design allows quick access to the gage leaf from either end of the holder, reducing handling time during repetitive measurement tasks. It is appropriate for both shop and field use wherever single-leaf feeler gages are part of the standard measurement workflow.
Designed for use with 0.03 to 0.5 mm single feeler gage leaves or strips. Specific compatible leaf sets or strip sets should be verified against the leaf thickness range before purchase.
No power source is required for this hand tool. Insert the feeler gage leaf or strip into the appropriate end of the holder before taking measurements. Ensure the leaf is fully seated and secure before applying it to the measured gap to avoid false readings. Handle feeler gage leaves carefully to prevent bending, which would affect measurement accuracy.
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