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feature:
1, Raug ntawm kab rov tav vial: 0.5mm / m
2, Raug ntsug vial: 0 5mm / m
3, Raug ntawm 45 vial: 0.5mm / m
4, Mark equidistant point & lineaccording mus rau lub scale rau theupper lub ntsej muag
5, Steel koob khawm
6, Cov no yog steel koob rau
7, Ob xaus ntawm qib. Cov theem yuav tsau rau ntawm phab ntsa tom qab nias cov nyees khawm
8, Vertical vial kuv Kab rov tav vial
9, Siv rau ntsug thiab kab rov tav ntsuas