Collimator / sight tube

[dannat]

Does anyone have a link for building a home-made sight tube/collimator - I am pretty sure I have seen one using a film canister, but cannot find it?
any help much appreciated daniel

[dannat]

don't worry - I found it.

[eqcradle]

I found there was a couple of mm play with the 35mm film canister I used so I tried the bottle that Herron brand paracetamol tablets from the supermarket come in. It's a white plastic bottle with a green lid and is a perfect fit for a 1.25" EP.

CL.

[dannat]

thanks for the advice, i'll look for it