长度計量工作中,通常用标准圓柱角尺来檢定直角尺的角度。使用这种方法时,标准圓柱角尺与受檢角尺之間的縫隙,用标准光隙法或一級厚薄規測量,但厚薄規精度不高,而光隙法又需要相当經驗才能得到可靠的結果。为此,本文介紹一种直接讀数的标准圓柱測量法,能測出1～3級直角尺角度的实际偏差值。一、測量原理将一般标准圓柱的基面研去一部分(图1),再放 Length measurement work, usually with a standard cylindrical square ruler to check the angle of the angle. When using this method, the gap between the standard cylindrical square and the square under inspection is measured by the standard optical gap method or the first-level thickness gauge, but the thickness gauge accuracy is not high, and the optical gap method requires considerable experience to obtain reliable results. To this end, this article describes a direct reading of the standard cylindrical measuring method, can be measured 1 to 3 degrees angle of the actual angle deviation. First, the principle of measurement The general standard cylindrical base to study part (Figure 1), and then release