Just got my MkIII Compass back from Trademark London

[trademarklondon]

I received a 1942 TG Co (The Gramophone Company - later became EMI Records) MkIII in poor condition. It had been "repaired" using gunge and surgical spirits that had become liquid glue that coated the inside and outside of the capsule, effectively gluing the capsule into the lower base - a nightmare. This 1942 MkIII also shows that the original MkIII did not have lid window guards. They were brought in later, and where you see an early dated compass with the guards it is because it was an afterfit.

I have taken the unusual decision to re-light this one. I removed all the Radium-226 based old luminous paint and replaced it with Tritium lamps, where I could, and Promethium paint where the lamps won't fit.

You can clearly see the black rubber sealing gasket around the edge of the sealing glass - in the 1940s they used red rubber, which had a much shorter working life, as it was natural rubber.

Attachment 24422

Attachment 24421