"William Noble" <nob...@nowhere.com> wrote in message

> oh, the "micrometer part" is really part of some optical device (anyone
have
> a clue?) it has a dial graduated from infiinty to 0.5 meters, has a 0.275
> inch diameter mounting pin, and two mirrors - it may be part of a camera
> range/viewfinder? or maybe part of a transit?  I'd like to figure out what
> this is, but it's probably not a valuable or useful item once I figure it
> out - it's the thing with the round dial in the photo.  it is plated
brass,
> aprox square in cross section (.433 inches), 2.440 inches long - the side
> with the dial has one window (the thing wth the concentric circles).178
> inches in diameter, the other side has two such windows, one in line with
> the window visible in the photo, one at the oposite end of the device -
> rotating the mirror changes the mirror angle on the through window pair.
If
> I wasn't convinced this was waaaaaay too old, I'd say it was part of a
laser
> range finder. It's nicely machined, if I had to guess, I'd say it's
German,
> and pre 1965, maybe pre WWII -  anyone got a clue?