Perhaps worth mentioning that they were procured at short notice and low cost to support the Falklands and gave over 30 years service.

brown webbing kit with AM stamps – faked?
https://www.ebay.co.uk/itm/222842592071
https://www.ebay.co.uk/itm/273089015056

perhaps this is performance art

These remind me of the ones used on ship panels – made by Chubb so may well be similar.
chubb 47/90396
http://www.nsn-now.com/Indexing/ViewDetail.aspx?QString=4210995293637

check out the pictures at the end of
https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjK9pb2jcjZAhXLtRQKHVzUDUsQFggpMAA&url=https%3A%2F%2Fwww.dstan.mod.uk%2FStanMIS%2FIndexes%2FDefenceStandardDownload%2F4492%3FseriesId%3D3&usg=AOvVaw2N3bhgHFscNJk5lOXDWJNe

Yes you can see the dwarf or two painted on the side. Looks like new Bomb Aimer’s perspex.

Hmm, what has ITAR got to do with selling a Tornado?

Probably not aircraft, they made scientific and industrial instruments as well. Maybe hot water system.

The patents marked on the dial date from the 1920s and indicate that it should have had a capilliary which would explain why the pointer is stuck at the end. The eagle eyed will have also spotted 5ft which is probably the length of capilliary provided.