[majoconz]

Looks very similar to the one that was in the Wellington Workshops of the CAA back in the 70's. We had a full-time man who knew how to drive that machine and could repair the most complicated of RF coils and 99% of them worked perfectly. This was when every control tower had an Eddystone 680x, notionally used to check the NDB's but most often to check the cricket score or the winner of the 4.30. - quite often the Eddys had RF transformers popped due to lightning strikes.

Under supervision us senior techs were allowed to make transformers for our latest projects - supply your own stack of E's and I's and make your own mandrel for the centre. There was also a vacuum impregnator and a high voltage insulation tester to make sure all was good.

All gone now when Airways took over - I managed to score a Singer NM 37/57 field strength meter recently for a pittance in non-working order - popped fuse replaced and all good!