It shows that the non-notated tool can be used to inspect the Anglehole in the spare coordinate system.
证明对于非旋转测头利用零件坐标系旋转也能进行角度测量。
2
When he had turned the Angle of the gallery, the distant glimmer of an air-hole disappeared, the curtain of obscurity fell upon him once more, and he became blind again.
当他转过了巷角以后，远处通气洞的光线就消失了，黑幕又在他前面落下，使他再次失明。
3
Machining the spark plug hole and counter bore at a compound Angle.