NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Air navigation and polar exploration
From: Luc Van den Borre
Date: 2023 Jul 23, 12:56 -0700
From: Luc Van den Borre
Date: 2023 Jul 23, 12:56 -0700
> As an aside, the bulb threads are 9mm. Bill Morris thinks these are Ediswan but I've not been able to find any in this size. Anyone have any leads?
The threads look to be E10 fittings. Those are still widely available in all kinds of variations. I saw some LED ones that are quite low profile. Search for 'E10 bulbs'.
If you really want or need the flattened bulb, search for reproduction Enigma lamps. Some versions of the Enigma encryption machine used these under the keyboard:
https://www.cryptomuseum.com/crypto/enigma/lamps.htm
https://toadjumper-militaria.com/product/reproduction-wwii-german-enigma-lamps-bulbs/
Luc
