portable roughness tester 1.Hand-held & advaned model 2.Easy operation menu 3.large LCD display with backlight. Technical Specification portable roughness tester .TR200TR210TR220Roughness parameters Ra, Rz, Ry, Rq, Rt, Rp, Rmax, Rv, R3z, RS, RSm, RSk, Rmr, Ra, Rz, Ry, Rq Ra, Rz, Ry, Rq, Rt, Rp, Rmax, Rv, R3z, RS, RSm, RSk, Rmr, Rpc, Rk, Rpk, Rvk, Mr1, Mr2 Assessed profiles Roughness profile (R) ...