supply of internal micrometer 3-point metric etc.internal micrometer 3-point metric etc.,internal micrometer 3-point metric, series: 468 digimatic holtests, 200 to 225mm metric mea suring +/-5 um accuracy - 2um resolution lcd display, sr44 battery power source similar equivalent to mi tutoyo or 468-178 from make-mitutoyo/tesa/forbes only along with calibration certificates of nabl approv ed lab or npl with customized ring of size 215 mm for calibration purpose [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]