Kev Siv Khoom:
Siv rau cov khoom siv tshuab dhos tsis siv neeg, cov khoom precision xws li cov khoom siv hluav taws xob, tsheb, cov twj paj nruag, cov moos thiab cov moos;
Cov khoom siv hauv chaw ua haujlwm/tsev neeg Cov khoom siv lub cev muaj zog, ntau yam tshuab Cov ncej precision.
Cov yam ntxwv ntawm cov khoom:
Cov hlau txiav yooj yim, kev sib tsoo nto meej, kev kam rau lub voj voog ntawm 0/-0.02 hli,
Kev sib npaug zoo, kev ncaj nraim zoo, tuaj yeem siv ncaj qha, txuag lub sijhawm thiab yooj yim
Khoom siv: 304, 303F, 303CU, 316LF, 416F, 420, 420F, 420J2, 430F
Khoom txoj kab uas hla: 0.8 ~ 200 hli
Lub sijhawm tshaj tawm: Lub Yim Hli-23-2018