Thread Gauge
HIRT Thread Gauge Feelers ensure precise measurements for fine threads up to M1.7 in the size range 0-200 (ball diameter 0.200 mm) to size 12 (ball diameter 4.000 mm). Each insert contains grade 6 ruby balls with a maximum dimensional deviation of ±1 µm and is available in 90° or parallel orientation. The inserts are available individually or as a set of 12, 13 or 14 pieces and are supplied in a durable wooden box to ensure protection and proper storage.