supply of digital outside micrometer , set of three micrometers 1. digital outside micrometer range 225mm -250mm, qty 01 no., 2.digital outside micr ometer range 250 mm- 275 mm qty 01 no. 3.digital outside micrometer range 200 mm- 225 mm qty 01 no. least count 0.001mm and .0005 inch. both end tungsten carbide tipped. digital display convertible from micron to thou with nabl approved lab calibrati on certificate. make mitutoyo/insize/baker. [ warranty period: 30 months after the date of delivery ] ] , digital outside micrometer of range 175-200 mm with lcd display, accuracy +/- 2 micrometer, resolution- 0.001 m m of make- mitutoyo/baker/starrett/facom. note: 1) automatic shut-off to save battery life 2) calibration test certificate traceable to nabl certified labs. [ warranty period: 30 months after the date of delivery ] ]