1) Digital Dial Bore Gauge Of Range : 50-150Mm, Lc 0.001Mm With Calibration Certificate. Make : Mitutoyo / Vogel Germany /Starret /Spi /Igaging /Insize Only. 2) Digital Dial Bore Gauge Of Range : 150-250Mm, Of Mitutoyo 511-805 Or Equivalent Along With Absolute Digimatic Indicator Id-C Range 12.7 Mm Of Mitutoyo 543-310B Or Equivalent . Make : Mitutoyo / Vogel Germany /Starret /Spi /Igaging /Insize Only. 3) Digital Dial Bore Gauge Of Range : 250-400Mm, Lc 0.001Mm With Calibration Certificate.