supply of surface roughnesssurface roughness,surface roughness tester of make/model: surftest sj-210, model-178-561-02(or) similar. technic al specification: range 360 micrometer (-200 micrometer to +160 micrometer), range/resolution: 360 micro met er/0.02 micrometer, 100 micro meter/0.006 micro meter. x-axis-16 mm, measuring speed 0.025 mm/s, 0.5mm/s , 0.75mm/s, returning speed-1mm/s, measuring force/ stylus tip shape-0.75mn/60, 2 micro meter parameters: ra, ry, rz, rq,rt, rmax, rmr (c), rsm, rv, rsk, rkv, rpm, tp auto sleep facility storage, built in memory up to 10 calibration, auto calibration with the entry of numerical value power supply, rechargeable ni-mh battery, a c adopter charging time of built in battery- 4 hours, endurance about 1000 measurements, weight 500 g, standar d accessories: connecting cable, roughness specimen, carrying case, calibration stage, protective sheet for displ ay, operation manual, warranty card. the item should be compatible to measure surface roughness of round axle s and wheel disc bore. make: mitutoyo (or) similar [ warranty period: 30 months after the date of delivery ]