INSIZE 4267-18D Steel Pin Gauge Set (High Accuracy) Ø18.00–18.50mm

The INSIZE 4267-18D is a steel pin gauge set spanning Ø18.00–18.50mm in 0.01 mm steps, giving 51 individual pins to check hole and slot sizes across that band in fine increments. INSIZE makes the pins from alloy steel hardened to HRC62-65 and holds them to ±0.5 µm diameter accuracy, meeting the DIN 2269 grade 0 standard for pin gauges. Sets like this are used in tool rooms and calibration labs to verify bore diameters and to set other measuring instruments where a precise, traceable size step is needed.