Heimann Camera's

not a plc question but I am wondering if anyone on here has ever dealt with these. I am having some issues on an older system and I have not been able to find one lick of information about them. I called the local (all of us) rep for them and they have no record of them.

May not helpful or what you want but I would retire them and get something more servicable. Maybe Banner?
https://www.bannerengineering.com/us/en/products/machine-vision.html#gs.E6tQkAI

Problem there is i'm not sure what the lense size is to replace them with. Is there any tools you know of that I might be able to use to try and make sure the thread and size is the same?

Banner has great tech support. Give them a call and they may even know a little about what you have. They have a lot of products that are not listed on line but may be in there inventory.