Subito internal fine gauge series SU - Application: For exact measurement of bores using the 2-point measuring method. Shape deviations can be determined by rotating and/or moving the instrument in the bore. - Design: Fixed measuring pin made of hardened steel, movable measuring pin tungsten carbide tipped. - Advantage: High repeatability of 0.5-1.5 µm, self-centering in the bore. INVAR tube (special nickel alloy) guarantees the lowest possible thermal expansion against hand heat or high ambient temperatures. - Delivery: Without fine pointer, with calibration certificate, in wooden case.