The plate on the back indicates it was patented in 1914. It is unique in that the user sets the altitude of his location to obtain an accurate reading. The body of the instrument appears to be copper but there are indications that it was brass plated. It is in good shape and I have noticed changes in the readings over the past several days. There is minor cracking of the paint on the dial. It is 5 1/8″ in diameter and 2 1/2″ deep.

Up for sale is this hard to find Curry & Paxton wall mount adjustable light fixture with a nice x-ray mercury shade , Full brass light stucture , missing the wall mount stucture , The back plate is 9 tall by 2 wide and 1 thick. 24 inches in projection include shade. Very nice addition to any optical collection. Old or vintage light fixture should always be check by an electrician before using them , for safety , this is your responsability to do that. Thanks and have a great day! If you have a chance take a look at my other listing. The item “Rare Antique Adjustable Brass Wall Light Curry & Paxton London Optical Optcians” is in sale since Monday, December 7, 2020. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “bilodeau2708″ and is located in Lambton, Quebec. This item can be shipped to United States, Canada.

• Maker: curry & paxton
• Original/Reproduction: Original
• Time Period Manufactured: Pre-1930