Amagwiritsidwa ntchito mwapadera pakukonzanso ma squaring wheel ndi ma calibrating rollers, pulumutsani mtengo wa zida za diamondi.
Magawo a calibration roller adapangidwa kuti azidula bwino komanso mitengo yochotsa zinthu zambiri. Magawo amavomerezedwa kuti azigwira ntchito nthawi yayitali, kugwiritsa ntchito mphamvu zochepa, phokoso lochepa logwira ntchito, kuthwa kwabwino komanso magwiridwe antchito okhazikika.