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要精确地测得小孔内窄环槽的最大槽径是非常困难的。这里有一种既快又简单的测量这种隐蔽的槽径尺寸的方法,测量精度为±0.001时。作这种测量时,首先必须知道孔径,
It is very difficult to accurately measure the maximum slot diameter of a narrow ring groove in a small hole. Here’s a quick and easy way to measure this covert groove size with a measurement accuracy of ± 0.001. For this measurement, you must first know the aperture,