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The PRECISION BRAND 77750 is a 20-piece thickness gage Poc-Kit assortment designed for fast, accurate gap and clearance measurement in the field or shop. Each blade measures 0.5 inches wide by 5 inches long and is manufactured from stainless steel for corrosion resistance and long service life. The compact folding kit format keeps all blades organized and protected, making it practical for HVAC technicians, machinists, mechanics, and maintenance professionals who need reliable feeler gage access on the job.
This assortment is suited for residential and commercial service applications where precise gap measurement is required — including checking valve clearances, bearing fits, belt and pulley alignment, and component spacing. The stainless steel construction holds up in environments with exposure to moisture, cutting fluids, or mild chemicals. The Poc-Kit design folds into a pocketable form factor, keeping the blade set together and reducing the chance of losing individual gages on a busy job site.
Designed as a general-purpose feeler gage assortment suitable for HVAC, mechanical, and maintenance trade applications where standard 0.5-inch-wide blade gages are required.
Feeler gages are a hand-measurement tool requiring no installation. Select the appropriate blade thickness and insert it into the gap being measured; the blade should slide with light drag and no binding. Keep blades clean and lightly oiled when stored to preserve accuracy and prevent corrosion. Blades that are bent, nicked, or worn should be retired, as dimensional damage will produce inaccurate readings.
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