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Product name：LB-40 continuous scale gauge
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亦稱打點機，是根據新國標研制并專業生產而成。并按照GB228-2008金屬材料拉伸試驗的規定要求設計制造，適用于圓鋼、扁鋼、鋼管、型鋼及其它有色金屬材料打點標距，供抗拉試樣之用。該連續式標距儀構造精密，使用方便，打點準確，工作效率高，操作簡便，是試驗室必備的配套儀器。
If you shake it once, you can make 40 punctuation.
The punctuation distance is 10mm + 1mm, 5mm + 0.5mm, the full length is 400mm, the punctuation point is made of ball bearing round steel, and the hardness is no less than HRC55 degree.
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