The barometer changes from inside and outside, but it is probably not calibrated. Very clean the box has a broken piece of wood. The item “Aneroid ships Barometer US Navy WWII era BU 1942 Fee Stemwedel works ships” is in sale since Friday, December 01, 2017. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “brgnhntjk1776″ and is located in Helmetta, New Jersey. This item can be shipped to United States.