Schwenk 62400021 Contour measurement gauges Novometer range 95-180mm graduation .1mmStandard Novometer With the standard Novometer the diameter is read at the scaled ring, which is laser scaled. The vernier enables a reading of 0,1 mm. Contour measuring instrument for determining the average inside diameter of round, oval or constant polygonal bores, with scaled ring and vernier. Tape width: 20 mm. Schwenk 62400021 Contour measurement gauges Novometer range 95 180mm graduation . 1mm