Square & Hexagonal Plug Gauges | ULTRA Shop

Buy high-precision square plug gauges according to DIN EN ISO 1938-1 and hexagonal plug gauges according to DIN EN ISO 23429 from ULTRA for exact polygon testing online.

Plug gauges for square and hexagonal profiles ensure rapid, reliable dimensional and form inspection of internal polygon geometries directly on the shop floor and in quality assurance. Strictly adhering to metrological principles, the longer "go" end inspects the minimum dimension of the width across flats as well as any geometric form deviations within the profile element, while the shorter "no-go" end exclusively checks compliance with the maximum dimension. Our B2B portfolio provides maximum flexibility for your gauge monitoring: discover square gauges and hexagonal gauges from the ULTRA brand in the width across flats range from AF 2.001 mm to 70.000 mm – customizable in the online shop down to 3 decimal places. All profile gauges guarantee seamless, traceable calibration through optional factory or DAkkS certificates.