GAPMAN® Portable Electronic Feeler Gage GAPMAN is the world's first high precision, non-contact, portable electronic gap measurement gage. It features a dual capacitive sensor for position-compensated measurement and easy insertion into very narrow gaps down to 0.009" (0.23mm) in a wide range of parallel and roller gap applications. Microprocessor based and application software driven, GAPMAN records and stores data points for easy transfer to SPC and other quality systems. Additional information is available.