Collin, if I read you correctly, you can use the tangent function to find the 
height. The tangent of the angle equals the opposite leg (from the angle) 
divided by the base length.

HTH


-----Original Message-----
>From: Collin Brendemuehl <coll...@brendemuehl.net>
>Subject: Semi-OT: Math guru needed
>
>I would like to figure out how to use the monocular.  Can't find
>instructions anywhere.
>It has a 4-division reticle inside with each division having 10 divisions.
>It appears that these may represent angles, with the outside edges being the
>full 6.2 degrees.  But I could be wrong on that.
>
>For a right triangle where the base length is known and a second angle is
>known, what is the formula for calculating the height.
>I'd like to figure out how to use the reticle in that monocular.  Can't find
>instructions anywhere.
>Though I did find a user who spoke very highly of it.
>http://www.nativetreesociety.org/measure/reticle/monocular_reticle.htm
>One nifty gizmo.
.


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