Optical tube binocular(20? inclined)
Eyepiece(wide field) 10X (view field .87″ DIA)
Objective 0.8X~8X (zoom)
Zoom ratio 1:10
Infinity parallel optical system and 20? inclined optical tube reduce fatigue.
Coaxial illumination is optical for deep holes that cannot be observed by ring light.
Aperture diaphragm is optional for large depth for dield and high quality image.

3M 45100, Roloc Disc Pad TR, Hard 1-1/2 in 1/4-20 Internal, 7000045286
Dynabrade 15336 Rubber Drive Wheel
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 82975, Roloc D/F Cool Running Disc Pad TR, 3 in 1/4-20 Internal, 7010309116 
