Picture of PVC Periscope
My son came to me with an idea to build a periscope. He had found a simple project in a book which used a milk carton and two mirrors. We had a couple of mirrors, but no milk carton. So, the Dad said: "We are not going to build this toy periscope, we are going to build a real one!". 
I bought a couple of 3" PVC elbows ($2.39 ea., and a 2-ft. PVC pipe ($5.44,
I had already a couple of 3" square mirrors from Michaels (sorry, no link here).
Then I cut two slots in each PVC elbow using Dremel Multipurpose Bit 561 (good for plastic and wood). 
The rest was easy: adjust the mirrors so they are at 45 degrees and make sure you see through the periscope. Then fix the mirrors using a glue gun.
The periscope is ready!

anasdad1 year ago
Great Instructable!
men lahak1 year ago
So many thanks, my first choise to serch this proyect was Instructables and i find it, this will be tomorrow homework to my cousin.
This is exactly what I was looking for. Are there any plans in the future to doing a step by step ible?
pavelanni (author)  evilspacemonkey2 years ago
I'm glad you liked this small project. Sorry, I didn't take step-by-step pictures while doing it, it seemed so simple. All I have are the photos and text above. I hope it's enough to reproduce this periscope.

But thanks for your comment, I'll keep this in mind while working on my next project.
DeesSqueeze2 years ago
Interesting. Very. I have been looking for something like this for a while. My only question - how do we download the steps?