What is this?

[Macchu]

Does anyone know what this is? I inherited it from my father in law that used it, I think, with his 1947 Zeiss Ikon. I think it is some kind of distance/range estimator. Itwas made by DOLLOND. Any ideas?

[crawdiddy]

I can't see anything.

[gb hill]

Up load a picture of it. I can't see it either.

[oscroft]

And I can't see it either - but it's a rangefinder ;)

[Kim Coxon]

Dolland and Aitchison are still opticians in the UK. My bet is a rangefinder too. ;)

Kim

[Macchu]

Sorry Guys, I couldn't get the pic uploaded. Now done on thread "What is this 2"