NPFC - GGG-M-350
|Publication Date:||16 July 1990|
This specification covers Inspection mirrors of the type generally used for visual examination in positions and places where it would otherwise be difficult or impossible to see.
The inspection mirrors shall be of the following types, classes, and styles, as specified (see 6.1).
Type I - Ball joint (mirror adjustment) Class 1 - Circular mirror Style A - Fixed length handle Style B - Telescoping length handle Class 2 - Oval mirror Style A - Fixed length handle Type II - Plunger actuated (mirror adjustment) Class 3 - Rectangular mirror