Bore gauge digital indicator, range: 50 mm- 150 mm with least count: 0. 001mm as per product code no. 511703 plus 543790 of M/ s. Mitutoyo make or its equivalent in M/ s. Stanley/ Insize/ Baker/ Forbes/ Fowler/ Precision makes. Features:- 1 ) Dial indicator and Dial protection cover must be supplied. 2 ) Extension Rod must be supplied for measuring deep holes. 3 ) Wide measuring range with interchangeable washer & Sub- anvils to be provided. 4 ) A carbide ball is used for the contact point & it is more abrasion resistant than a hardened steel ball. Note: One sample should be got approved before effecting bulk supply.