supply of digital wheel diameter gauge [ folding type ] fitted with lcd display model no. wd-3 having least count + / - 0.01 mm for bg loco. specification as follows: ( i ) measuring range: 900 to 1100 mm; ( ii ) measuring accuracy: + / - 0.2 mm ( tread with surface finish n7 / n8 or better ) ; ( iii ) least count: 0.1 mm; ( iv ) applicability: b.g.wheels ( solid & some tyred ) ; ( v ) diameter reading; directly displayed on lcd display ( no tables required ) . along with calibration certificate traceable to nabl standard and packed in storage wooden box with carrying handles and lock & keys arrangements.