'Micro Hole Test' Bore Gauges - (JMAS 5010)
MT-3N, MT-4, MT-4N, MT-6N, MT-10N
It can comply with measuring inner diameter from minimum φ1.7mm to maxφ10mm.
It realizes repeating accuracy level 2um, even though it is for small inner diameter which is difficult to measure.
It realizes smooth operation with hard chrome plating. It can be naturally inserted to small inner diameter and obtain stable indication figure.