Under the scattered natural light or unobstructed white transmitted light, the brightness of the light should be above 400W bulb with a distance of 30MM, and the visual inspection lasts for about 5 seconds or 45-90 degrees.

5. Check the contents:

A) Reference sketches and approved samples for dimensions and structures

B) The surface will be divided into 12 regions by the ribs on the back.

C) secondary proofing according to MIL-STD- 105D, and the AQL value is: CR=0 MA= 1.0 MI=4.0.

D) The horizontal plane is the mechanical surface that defines the NC machining center.

E) The horizontal plane B is: defining the external teeth and the central mechanical area.

F) The horizontal surface of c is the surface defining the back.

6. Accept the standards of different defects