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How to measure the size of O-ring
The following two methods are generally used to measure the size of O-ring
1.Projector measurement
In short, measure the shadow of the O-ring.
We usually choose projector as the measuring tool.In general,
O-rings are measured to measure the size of the outside diameter and inside diameter.
When do the measurement ,The diameter is measured at the top, bottom, left, and right four points of the O-ring.
The following methods are applicable to both the outside and inside diameters of the O-ring
1)In the projector, according to the size of the product to adjust the multiple size of the lens, the lens will be adjusted clearly
2)Place the coordinates on one edge of the O-ring, close to the projector coordinate lines
3)Find the icon marked with a circle on the projector, click the icon, and then press the OK button
4）Move the coordinates to the second point of the o-ring and close the coordinate line to the edge of the O-ring,then press the OK button;
And so on, so that after four points of the O-ring, the diameter is measured
2.Optical image measuring instrument,that is to measure the O-ring itself.
The method is basically the same as the projector
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