Binocular waterproofing

6:33 pm

Explanation of waterproof, water resistant and weatherproof optics.

http://www.youtube.com/v/ghxFKRY_HPo?f=videos&app=youtube_gdata

How to Make Binoculars

5:29 pm

This is my last video in my dorm room.

http://www.youtube.com/v/2TLL2OJiioc?f=videos&app=youtube_gdata