The C-K Engineering Digital Feeler Gage is an unique tool for measuring the end clearance of  piston and sealing rings.  Using simple techniques, the Digital Feeler Blade is an easy-to-use electronic tool for accurately and precisely measuring end clearance on a wide variety of rings.

Consisting of a tapered feeler blade integrated with an electronic measuring device, the Digital Feeler Blade records results as quickly and easily as working with a manual feeler blade.