DIAL TEST INDICATORS TESA INTERAPID 312 Dial Test Indicators very large measuring span Ideal for inspecting all significant size variations e g on the

DIAL TEST INDICATORS TESA INTERAPID 312 Dial Test Indicators very large measuring span Ideal for inspecting all significant size variations e.g. on the surface plate Measures position form and shape errors. Safe reading thanks to secondary pointer totalling the number of revolutions made by the main pointer. Bidirectional measuring with automatic reversal within the movement. Pointer rotation direction is always constant due to automatic reversal effect. Jewelled movement with rubies. Ball-bearing lever system. Measuring insert swivelling through 210. Particularly robust due to full-metal construction. Monobloc housing with mounting through dovetail clamping and a 0 4 mm swivelling shank. Stylus insert with angular position of 12 All models INTERAPID 312 are designed to give a true reading when the angle between the stylus and the workpiece surface is 12 (Fig. A). In any other measuring position including parallel position of the stylus against the workpiece surface measured readings have to be corrected accordingly (fig. B). please consult the instruction manual on this subject. Standard Model Time-tested dial test indicator. The dial face is mounted parallel to the axis of the insert. Perpendicular model Dial test indicator with dial face mounted at right angle to the axis of the insert. Measuring A direction Measuring B direction Permissible limits of a metrological characteristic (MPE MPL) o Deviation range over partial measuring range fe Total deviation range fges Repeatability limit fw Max. hysteresis fu Measuring force 001 mm 0002 mm Pointer revolution Pointer revolution 1 2 1 2 10 pm 20 pm 4 pm 8 pm 13 pm 23 pm 6 pm 10 pm 3 pm 1 pm 3 pm 2 pm 012 N 025 N INTERAPID 312 Technology LEVER DIAL TEST INDICATORS INTERAPID 312