This listing is for A Vintage Bristol Windup Instrument from what I can tell its a Humidigraph. I wound it up and it Hums and is ticking like a clock so it does run but not sure if it works correctly. Has legs to stand up or a notch on the back to hang it on the wall. Not positive of its exact name or use. Again it does run but not sure if it works. I Work Days, So questions will be answered as soon as possible usually in the evening. After 7 Days Ebays Unpaid Item Assistant will automatically file Unpaid Item Claim. Check your countrys requirements for more information. The item “BRISTOL HUMIDIGRAPH MODEL 411 CHART 4032 RECORDER RANGE 30-70 WIND UP HANGING” is in sale since Monday, July 06, 2015. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “icollectitalll” and is located in Evansville, Indiana. This item can be shipped to United States.