Thanks BEagle for the information. Here WEB page
dedicated to the VC-10, but
unfortunately the
cockpit photos there (nav/tech) do not show the panel - so probably
it is the wrong type. There is a flight manual out there showing the panel, but it
is different from panel shown in posting 10 (top) - and it is named "compass". So
you are right, that it controlled just the compass and was a heading reference only
in the VC-10.
Thanks for responding...