Tender For portable surface roughness tester standard drive unit type standard detectors 17.5 millimeter 360 m (-200 m to +160 m) for measuring surface roughness of wheel seat and wheel disc bore.as per specification-1)evaluation parameter ra,rz,rq,rt,rv.2) measuring range-0.005 -16 micron meter,3)measuring speed (measuring)-0.25mm/s, 0.5mm/s, 0.75mm/s.4)power supply-via ac adapter/built in rechargeable ni-mh/li battery.5) display- lcd with connecting cable, roughness specimen, carrying case, ac adapter, operation manual, quick reference manual-make-precise/mitutoyo/time/baker or similar [ warranty period: 30 months after the date of delivery ] ]