Gem Bids For Dial Caliper Gauge Internal Type 40 To 60mm L. C-0.1mm, Groove Depth-8.3mm, Max, Groove Measuring, Dial Caliper Gauge Internal Type Range: 60 To80mm, Groove Depth-8.3mm Max, Groove Width-1.2mm, Dial Caliper Gauge Internal Type Range: 20to 40mm, L. C-0.1mm, Groove Depth-7.0mm, Max,