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.

Insize 1147-200WL, WIRELESS ELECTRONIC DEPTH GAGES WITH MOUNTING HOLES FOR EXTENSION BASE, 0-200mm/0-8", 6940561942781
3M 20244, Neoprene Rubber and Gasket Adhesive 2141, Light Yellow, 1 Gallon Can, 7000121215, 4/case 