supply of digital 3 point internal micrometer inter changeable head sets of range 150 to 175m, permissible error(+/-5) micrometer or better ,large lcd display ,ip65 or better protection, resolution 0.001 mm similar to mitutoyo model no 468-176 with test ring of suitable diameter with in range with calibration certificate from nabl accredited lab. make:mitutoyo/baker/forbes /starrett or equivalentdigital 3 point internal micrometer inter changeable head sets of range 150 to 175m, permissible error(+/-5) micrometer or better ,large lcd display ,ip65 or better protection, resolution 0.001 mm similar to mitutoyo model no 468-176 with test ring of suitable diameter with in range with calibration certificate from nabl accredited lab. make:mitutoyo/baker/forbes /starrett or equivalent,digital 3 point internal micrometer inter changeable head sets of range 150 to 175m, permissible error(+/-5) micrometer or better ,large lcd display ,ip65 or better protection, resolution 0.001 mm similar to mitutoyo model no 468-176 with test ring of suit able diameter with in range with calibration certificate from nabl accredited lab. make:mit utoyo/baker/forbes /starrett or equivalent. [ warranty period: 30 months after the date of deliv ery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]