I was wondering how the RNZAF museum has faired in all this?

From their website….

The research collection consists of two archives. The paper archive comprises personal collections, manuscripts and ephemera, logbooks, journals, technical drawings and publications, maps and a research library of over 3,500 books. The photographic archive comprises some 700,000 prints and negatives as well as photographic albums, film and sound objects.

I am pretty sure I saw one of these instruments on sale in a Melbourne antique shop a couple of years ago.
From memory it was in an old picture theatre very near the train station at Footscray.
Given this is very close to where military aviation started in Australia (Point Cook) this makes sense.

I remember looking at it and thinking it was big and heavy for an aircraft instrument.

Vulcan clock in action

Here is a vulcan clock in action…

http://www.tatjavanvark.nl/tvve/nbs9s.mpg

There are a number of other interesting videos on this web site as well.

http://www.tatjavanvark.nl/tvve/dduck7.html

I have just realised that I have the specification for this instrument. It was built to specification RAF130 dated 25 Jan 1917.
The drawing associated with it is 1675/X. I do not have this drawing but get the impression it is a GA drawing which will not show the inner details. Given that there are 2 types, by 2 manufactures, I am sure the drawing is only GA.

I will post the pictures latter once I have scanned them.

FS47

You need to look in the offical documents for the info.
In this case FS47, Types of German aeroplanes.