从事精密测试的人都希望测试方法简便,又能保证所需求的精度。为此就需要对测试方法,特别是对新的测试方法进行精度分析。下面我们对卧式测长仪测量内螺纹中径的方法作了精度分析,不知是否正确,仅供参考。大家知道,在机械工业中螺纹环规和其它精密内螺纹中径的测量,一般是在卧式测长仪或卧式光学计上用比较法进行。按所用标准件 People engaged in precision testing hope that the test method is simple, but also to ensure the accuracy of the required. To do this, the accuracy of the test method, especially the new test method, needs to be analyzed. Below we measure the length of the horizontal length measuring instrument thread diameter accuracy analysis made, I do not know whether it is correct, for reference purposes only. We all know that in the machinery industry thread ring gauge and other precision internal thread diameter measurement, usually in the horizontal length gauge or horizontal optical meter with comparative method. According to the standard parts