This instructable is about making a rifle scope from an old binoculars. So, you need:
- synthetic rope
- a triangle file
- super glue
Also you can watch all process of making this scope on embedded video!
Step 1: Disassembling Binoculars
Disassemble binoculars to get access to second lense (usually it is pressed by sleeve)
Step 2: Setting the Reticle
You need to find a distance above the lens, on which you can clearly see anything you put. In other words, you need to find a focus distance of lense, so something placed on that distance will be focused on infinity.
Step 3: Attaching the Reticle
To get a necessary distance, I am grinding some gap in the plastic sleeve above the lense. I make 4 gaps to attach 2 lines, that will form a reticle.
Reticle will be made of one fiber of synthetic rope. Black rope is the best, but if you have only white rope, you can paint it with permanent marker.
So when you grind a necessary distance and fix a fiber on it, you can see a reticle very clearly through the ocular
Step 4: Finish
Assemble your monocle, and congrats, it is a rifle scope now!
It has some disadvantages: you need to literally put it in your eye, to aim on something. And if your rifle has some kickback, you will achieve a black eye. But it works for PCP airsoft without punching you in eyes.