Xa kufikwa kwimilinganiselo echanekileyo kwihlabathi le-metrology, Amatshini wokulinganisa uMlinganiselo weebhulorho ezisisigxina (ii-CMMs) zivele njengezixhobo ezibalulekileyo zolawulo lomgangatho kunye nokuqinisekiswa kwemveliso. Ezi matshini zenzelwe ukubonelela ngamandla omlinganiso okhethekileyo, ukuqinisekisa ukuba izinto kunye neendibano zihlangabezana neenkcukacha ezingqongqo. Ukuchaneka okuphezulu kwebhulorho emiselweyo ye-CMMs