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Originally Posted by WernerSobe
btw ive seen pictures of a wiz wheel as it was used in german submarines. They have used the known or guessed length of the target to find its AOB. Basicly its the same method as you find the range by mast high.
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Hmmm - now this sounded like a very cool (and relatively easy) idea at first - if you have a decent range estimate, and you can measure the observed/apparent length (presumably by reference to the markings along the horizontal/x-axis of the scope/TBT), it would seem to be a relatively simple matter of math/formulas to compute the AOB based on the relationship of the apparent length to the actual length (available from the recognition manual). However, I wonder if a wiz-wheel to do this would really be any easier to deal with than the Is-Was thing described in this thread, and this one seems to let you calculate either AOB or target course, depending on which data you already know, which is probably more useful than the above sort of special-purpose AOB calculator would be. Will have to see if I can put one of these Is-Was things together - sounds very cool.