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The PRECISION BRAND 77770 is a stainless steel thickness gage strip used to measure precise gaps, clearances, and tolerances in mechanical and industrial assemblies. The strip measures 0.025 inches thick, 0.5 inches wide, and 12 inches long, providing a reliable single-leaf feeler for checking fitment between mating surfaces. Its stainless steel construction resists corrosion and holds dimensional accuracy through repeated use. HVAC technicians, millwrights, pipefitters, and general maintenance professionals reach for thickness gages when verifying bearing clearances, valve seating, belt alignment, and compressor end-play during service and installation work.
The 77770 thickness gage strip is suited for residential and commercial service environments where precise gap measurement is required. It is commonly used during equipment installation, preventive maintenance, and mechanical inspection tasks. The 12-inch length gives technicians enough reach to access recessed assemblies, while the 0.5-inch width provides a stable contact surface for accurate readings. This gage is sold as a single pack and is appropriate for use in HVAC, plumbing, and general mechanical trade applications.
Designed as a general-purpose thickness gage strip for use in mechanical, HVAC, plumbing, and industrial maintenance applications where 0.025-inch gap measurement is required.
No special tools are required to use a thickness gage strip. Ensure all equipment is powered down and de-energized before inserting the gage into any assembly gap. Do not force the strip into a gap narrower than its stated thickness, as this can bend or deform the strip and compromise measurement accuracy. Handle edges with care, as thin gage steel can present a laceration hazard.
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