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سؤال: May I know what type of steel is used for the 400mm optical axis and lead screw?

السؤال بواسطة BG109121112 على 2020-09-09 02:43:41

BG171018373 Lookslike stainless and the two screws steel and brass. The rule is less than 0.5 mm thin and holes are fit for 0.5 mm pencil lead.

2022-02-04 03:10:43 مساعدة (0)
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