... multi-application measuring instrument for component surface quality evaluation. Model 2205A surface roughness tester is a multi-applicationmeasuring ... instrument for component surface quality evaluation. It is capable ofchecking the workpiece surface roughness on plane ,cylinder, ... ,phase corrected, un-filtered,un-filtered,Gaussian; Surface parameter:Ra,Rc,Rp,Rv,Rz,Rq,Rsm, ...