I thing is a 694 / F52 / F54 (I don't know for sure but mine looks similar with those ones) Fortin barometer with black stove enamelled brass frame, with silvered scales, chromium plated fittings and attached mercury thermometer. Fortin barometers on the internet, you will find more details. Any question, please feel free to ask. The item "Fortin Stick Barometer by F. DARTON & CO Ltd Watford" is in sale since Sunday, September 23, 2018.This item is in the category "Antiques\Science/Medicine\Scientific Instruments". The seller is "pinguin_2015" and is located in Droitwich. This item can't be shipped, the buyer must pick up the item.