Pocket size cased combination compass, barometer, altimeter, thermometer. I believe the case is aluminum, inside and out. Opens and closes, with latch that secures closed case. Center hinge remains in good working order. The barometer has a revolving outer ring to record barometric pressure and altitude readings. Heavy bevelled glass face, with convex magnification lens. Dial marked with atmospheric pressure to 31 inches and altitude to 12,000 feet. The face is marked for “Rain Change Fair”"compensated”, with convex magnification lens. The thermometer is missing. The research I’ve done makes me think this was most likely produced for military purposes, with optic’s done by. Cam-Lafontaine in Paris, France. Wide and 2cm deep. The item “ANTIQUE POCKET COMBINATION BAROMETER COMPASS THERMOMETER by CAM-LAFONTAINE” is in sale since Sunday, October 08, 2017. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “nicheoftime” and is located in Eugene, Oregon. This item can be shipped to United States.
