INSIZE 4267-5 Steel Pin Gauge Set (High Accuracy) 4.50–5.00 mm

INSIZE's 4267-5 pin gauge set spans 4.50–5.00 mm in 51 steel pins, each 0.01 mm apart. INSIZE rates these pins to ±0.5 µm diameter accuracy, meeting DIN 2269, grade 0; the pins are alloy steel, hardened to HRC62-65. The pins measure 50 mm in length and come housed in a lined wooden case for storage. Inspectors use sets like this to gauge hole and bore diameters by hand, trying successive pins until one seats correctly and reading the size off its handle.