A cardboard box containing a specialised light bulb. On all six sides of the cardboard box there are stamps “MADE IN ENGLAND”. The bulb is…
The top of the plate has a lid which is secured by two turning stops. The inside of the lid has a metal prong. The…
A wooden box-like instrument with a rounded front. he front of the box has a scale, printed on a translucent material, that runs 5-0-5 and…
A thick metal cylinder casing houses a single large ball bearing (approximately 8 cm across). There are three rotating devices affixed to the outside at…
The camera has two bulbous ends for film spools. Between these is a recessed lens with optical focusing. The top of the camera is removable…
A black plastic casing with two terminals on top with labels “+” and “-“. The plastic casing contains an H-shaped glass tube. The tube contains…
A black plastic casing with two terminals on top with labels “+” and “-“. The front of the casing is labeled “EPLAB”, “REC. U.S. PAT.…
A metal cylindrical canister with a metal tube in a slot on top of the metal cylinder. On the side of the metal cylinder is…
A short cylindrical coil set in a wooden frame with a wooden handle on one side. The cylindrical coil has a broader top and bottom…
A object in a cylindrical black metal casing on a roughly square metal base, also black. The casing is bolted with large iron bolts to…