supply of 3-point internal micrometer with interchangeable radiuses anvils of tool steel for optimum centering, new constant force digital readout with l.c. 0.01/0.001mm, metric/inch switchable, inbuilt ip67 electronics, rs 232 output, inbuilt bluetooth data transmission. operational range 400-450 mm, with calibration & warranty certificate, includes: digital display unit, measuring head with exchangeable anvils of range: 400-425 & 425 450 mm with 425 mm master setting ring with nabl. make :- baker , bower , naren or similar3-point internal micrometer with interchangeable radiuses anvils of tool steel for optimum centering, new constant force digital readout with l.c. 0.01/0.001mm, metric/inch switchable, inbuilt ip67 electronics, rs 232 output, inbuilt bluetooth data transmission. operational range 400-450 mm, with calibration & warranty certificate, includes: digital display unit, measuring head with exchangeable anvils of range: 400-425 & 425 450 mm with 425 mm master setting ring with nabl. make :- baker , bower , naren or similar,3-point internal micrometer with interchangeable radiuses anvils of tool steel for optimum ce ntering, new constant force digital readout with l.c. 0.01/0.001mm, metric/inch switchable, inbuilt ip67 ele ctronics, rs 232 output, inbuilt bluetooth data transmission. operational range 400-450 mm, with calib ration & warranty certificate, includes: digital display unit, measuring head with exchangeable anvil s of range: 400-425 & 425 450 mm with 425 mm master setting ring with nabl. make :- baker , bower , naren or similar [ warranty period: 24 months after the date of delivery ] ]