It has 4 lenses in total, two at each end. The only text on it is the number 50, stamped into the bottom of the ring that goes around the outside to attach it to whatever it goes with
It has 4 lenses in total, two at each end. The only text on it is the number 50, stamped into the bottom of the ring that goes around the outside to attach it to whatever it goes with
Looks like a microscope or
telephonetelescope insert with adjustable eye correction.Edit: Autocorrect
telephone?
I assume they mean telescope
Thank you, autocorrect to the rescue, again. Edited.
I wonder how many times autocorrect errors cause mayhem in communication compared with misspellings or mistyping?