Caliper npog
Rau ob peb duas las, caliper npog tsim kom tiav lawm - zais tej yam uas tsis zoo uas tsis zoo-saib nres calipers. Yog li yog tias koj twb tau nqis peev pab rau qhov kev teeb tsa zoo ntawm kev cai lub log thiab cov log tsheb, koj tshuav nws tus kheej kom ua tiav qhov kev sib hais pom nrog caliper npog uas muaj qhov ci, xim txaus nyiam ntxiv rau cov kev xaiv xws li cov cim logos thiab cov duab ntawm tus kheej.
