Hi QA1 - many thanks for your informative post! Given the part number for the LTN72 panel, I
indeed found a
pictures on AeroBay - the panel indeed looks quite similar to the first, oldest
ones on my first posting. The panel I have got looks identical although it has got a different
part number.
There is a catalog of commercial items available from
Northrop Grumman giving more part numbers
of various navigation kits - so also thanks for this hint! Will be a good starting point for more
research...
Thanks also for the formula on calculation of accuracy. Of course this linear+offset one is
some estimation - from a physical point of view (and what I saw in my restored systems) is,
that there usually is a strong oscillatory component in position (
Schuler period) too ;-)
Thanks again for all the input!!