亦称打点机，是根据新国标研制并专业生产而成。并按照GB228-2008金属材料拉伸试验的规定要求设计制造，适用于圆钢、扁钢、钢管、型钢及其它有色金属材料打点标距，供抗拉试样之用。该连续式标距仪构造精密，使用方便，打点准确，工作效率高，操作简便，是试验室必备的配套仪器。

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.