Stadimeter / Omnimeter

[pdiddy]

My understanding of the Stadimeter in real life is that is was basically a sextant in the periscope; it did not automatically send range to the TDC. I believe the crew had to figure it out using the arc tangent of the angle measured by the stadimeter. Knowing the "opposite" (target height) and the angle, you can figure "adjacent" (range). At least that's what I recall from high school geometry. So the crew had an arctan table or something like the omnimeter (Optical targeting correction mod) and had to manually figure range.

Is this correct?

(Btw, the KIUB in OM+OMEGU models this very well. You have to manually determine range using the AOBF (essentially a round omnimeter) after getting the angle measurement using the stadimeter and then also manually enter it into the TDC.)