Chishandiso che "three-coordinate", chinonziwo "dimension", muchina wekuyera kururama, unonzi CMM. Chishandiso chekuyera zvakarurama chakagadzirwa muma1960. Chakabuda nekuda kwekushanda nesimba kwezvishandiso zvemuchina otomatiki uye zvishandiso zvemuchina zveCNC, pamwe nekudiwa kwezvishandiso zvekuyera zvinokurumidza uye zvakavimbika zvekugadzirisa zvikamu zvakaumbwa zvakaoma.

Parizvino, kuyerwa kwezvikamu zvitatu kwave kushandiswa zvakanyanya mumaindasitiri akasiyana-siyana akadai sekugadzira michina, indasitiri yemotokari, indasitiri yemagetsi, indasitiri yendege, nezvimwewo, uye kwave midziyo yekuyera yakanyatsojeka yekuongorora maindasitiri emazuva ano uye kudzora mhando. Kune magaji edu asina kujairika, kuyerwa kwezvikamu zvitatu imuchina wekuyedza usingakoshi. Mushure mekunge tawana mifananidzo yezvigadzirwa zvemutengi uye tagadzira hurongwa hwegaji hunosangana nezvinodiwa zvechigadzirwa uye mutengi agutsikana, zvinodikanwa. Tanga matanho ekugadzirisa muchikamu chekupedzisira, tobva tashandisa kuyerwa kwedu kwezvikamu zvitatu, nekuti kururama kwechishandiso pachacho kwakanyanya, saka chishandise kuyedza kururama kwechikamu chimwe nechimwe chegaji redu, nekuti gaji pachayo inovimbisa kururama kwezvishandiso zvedu zvekuongorora. Semuenzaniso, imwe nzvimbo yegaji, flatness uye profile yake zvinosanganisira zvimwe zvikamu zvemota. Tese tinogona kuwana saizi chaiyo nekuona kuyerwa kwezvikamu.