A58.2002 Tsom Ntsig Micrometer

–Txhua yam yuav tsum tau teev nws txoj kab uas hla ua ntej xaj. Nquag nws yog 19 hli lossis 20mm rau tsom qhov loj me me tsom qhov muag, thiab 24 hli lossis 25mm rau lub tso suab tsom qhov muag.

Can ua tau raws li tus neeg siv khoom.