Hi Chris,
some years passed by now - did you have a closer look at your Ferranti
INS or did you even play around with it?
Together with two colleagues we have spent some time into revitalizing
the FIN1010s. The result can be seen in a video I revcently loaded up
to YouTube showing and explaining details:
https://www.youtube.com/watch?v=-EQqfxiGgd8
We not olny have a FIN up and running, we also built a logger to write
online data together with a GPS track onto a flash cards. This also
broadcasts the data via bluetooth allowing an ordinary tablet PC to
act as online map display. Additionally I built an interface to control
one of the original vintage moving map displays from Tornado based on
35mm film.
Erik.