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在JJF1085-2002《水平尺》校准规范中,要求配备专用45°角尺,45°角的角值偏差要求为±2’。角值用角度规检测,很难保证准确度。一般选用的45°角尺的边长都在(400×400)m m以上,用正弦规也无法检测。本文介绍一种简便方法,供参考。一、测量方法将45°角尺放在零级平板上,紧靠定
In the JJF1085-2002 “Level” calibration specification, requires a special 45 ° square, 45 ° angle angular deviation of ± 2 ’. Angular value with angular gauge test, it is difficult to ensure accuracy. The commonly used 45 ° angle ruler side length (400 × 400) m m above, with the sine gauge can not detect. This article describes a simple method for reference. First, the measurement method will be 45 ° square on the zero-level plate, close to the set