Re: rangefinders

[T3D John Bercovitz <bercov@xxxxxxxxxx>]

>> binoculars  with reticles ... sort of fenceposts meandering
>> zig-zag across the field of view.  The fenceposts were at different 
>> distances and had ranges tagged to them.  You set one of those fenceposts 
>> on top of your object and you've got the range

> Unless these had a mechanism for shifting the image of the reticle across
> the field of view, they were a variation of the common reticle, that allows
> you to estimate the distance to an object of known size.  I have not seen a
> moving reticle in a  binocular, and would track down the model if given any
> details, it would be very unusual.

Sorry - I was unclear.  It wasn't stadiametric.  No shifting of reticle was 
required because all the fenceposts were on each reticle to start with.  A 
reticle looked like this:

     
              |  10 000 m
                |
                  |
                    |
                      |
                        | 5 000 m
                      |
                    |
                  |

Now that's very abbreviated.  The thing had many zig-zags to it.  Of course
the other reticle was ever so slightly different and that provided the parallax.
I think the thing was Danish military issue.  A true stereoscopic rangefinder.
Now is this the same thing as the 'battery commander's rangefinder' you were 
talking about?

> On request, I will post it all to tech3d. 

So requested.  888-)

John


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