help iding an item

[picciton]

i found these in a lot with some older photography items and have no clue what they are called. when you look through the lens the rulers appear but i had to hold it up towards a light to get a clear view.

the bottom right seems to have a crack in the lens but you can still see the lines.

thank oyu

[eburtonlab]

Commonly known as a loupe or a magnifier with a reticle comparator.

http://www.electro-optix.com/magnifiers-for-measuring.html

https://www.microscopeworld.com/p-2711-reticle-comparator-angle-radius-length-diameter.aspx?gclid=Cj...

[picciton]

awesome thank you for the information.