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The STARRETT 52815 is a tempered steel feeler stock roll used for precise gap measurement and spacing applications across HVAC, mechanical, and general trade work. Measuring 0.018 inches thick and 0.5 inches wide, this roll provides 25 feet of continuous stock that can be cut to any required length. Tempered steel construction delivers consistent thickness and the spring-back characteristics needed for accurate feeler gauge work. Technicians and mechanics rely on feeler stock to check and set clearances on burner electrodes, valve seats, spark gaps, and other close-tolerance components where a fixed-blade gauge may not reach.
This feeler stock roll is suited for both shop and field use. HVAC technicians use strip stock to verify electrode gaps on oil burners and check heat exchanger clearances. Machinists and mechanics use it for bearing clearances, piston ring end gaps, and similar close-tolerance measurements. Because the material comes in roll form, a technician can cut a custom-length strip to suit the specific access constraints of a given job, making it more versatile than a standard feeler gauge set.
Designed as a general-purpose feeler stock roll suitable for use wherever 0.018 inch gap measurement or spacing is required in HVAC, mechanical, and maintenance applications.
Feeler stock is a measurement and setup tool installed by HVAC technicians, machinists, and general maintenance professionals. Power down and lock out any equipment before using feeler stock to check internal clearances. Use appropriate snips or shears to cut the strip to length; avoid bending the stock sharply at the measurement point, as this can affect thickness accuracy. Handle cut edges carefully, as tempered steel edges can be sharp.
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