DEVICE FOR TESTING ORTHOGONALITY OF ARTICLE END-FACE RELATIVE TO ITS SIDE THREAD SURFACE Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: the device is characterized in that a threaded mandrel is made in the form of bushing 1 the inner cylindrical surface of which is threaded, protrusions are formed on one of the end-faces, reference washer 5 is located on protrusions 2 and rigidly coupled with bushing 1. A probe adapted for alternatively introducing into groove 3 between the protrusion and interacting with end-face of an article being tested is used as a measuring element. EFFECT: improved convenience. 2 dwg