Building a Police Box a.k.a. The Doctor's TARDIS
The TARDIS roof lamp
• Roof lamp introduction
• Roof lamp plans
• Sourcing the components ←
• Making the lamp cap
Sourcing the components
Taking the fresnel lens out of a ship lantern and replacing it with plain glass
The hardest part to find (for me, anyway) to make this lamp, was the fresnel lens.
I eventually saw one in a ship lamp (anchor light) that was sitting in the widow of a ship's chandler.
I purchased the complete lamp just to get the lens but the lamp was not wasted as I replaced the fresnel lens with plain glass - simply a glass jar (from the supermarket) with the bottom cut off. It worked perfectly so I ended up with a working ships lamp as well as a fresnel lens for the TARDIS project.
The fresnel lens was 106mm (4 3/8") outside diameter (at the widest part) and 90mm (3 1/2") high.
The inside diameter was 76mm (3") one end and 78mm (a little over 3") at the other end.
All of the rest of the components I found without too much trouble.
Note: Since obtaining the fresnel lens, I have seen others at various places online including ebay.