Blackout Lighting + filters ON guards

[Tony Smith]

Originally posted by sth65pac
It looks to me as if the prototypes were made of Brass Hex stock and then turned up on a lathe, and then cast in mass production in diecast (*whitemetal).
Ian

Most of these that I have are made from a zinc or potmetal alloy, but I do have two that are made from Steel.

Does anyone have the dimensions of the extension tube used for the Axle Lamp? (I.D., O.D., Length?)

Don't they look good?