Sixhotyiswe ngezixhobo zokuhlola eziphambili ezifana nomatshini wokulinganisa iBrown & Sharpe onemida emithathu, iziko lokulinganisa iColin Begg P100/P65/P26, isixhobo sokulinganisa iGerman Marl cylindricity, isivavanyeli soburhabaxa saseJapan, iOptical Profiler, iprojektha, umatshini wokulinganisa ubude njl.njl. ukuqinisekisa ukuba uhlolo lokugqibela lucwangcisiwe ngokuchanekileyo nangokupheleleyo.