通り側ねじリングゲージとは | オーエスジー

This is a internal thread -shaped gauge that inspects the total effective diameter of external thread .
If it passes through, it will pass in that the effective diameter is not too large, and the screw accuracy is guaranteed by inspecting and passing it as a set with the stop screw ring gauge.
In addition to the effective diameter, the tolerance of the half-width of the mountain and the tolerance of the pitch are also determined.