Tool Type: Pocket barometer. Brand: Short & Mason. Marks: COMPENSATED FOR TEMPERATURE Tycos SHORT & MASON LONDON MADE IN GT BRITAIN. Some light finish wear. Comes with the pictured pouch, box and instructions. Snap on case is broken. Measurements: 2″ diameter, 5/8″ thick. 20% of sales go to benefit the Davistown Museum. MULTIPLE ITEMS: PLEASE request an invoice before paying! If you have any questions about these items, please ask. The photos ARE of the actual items offered unless otherwise noted and should be used as indications of the items’ conditions. If I have not described an aspect of the item, please do not make assumptions–send me a message and ask, and I will do my best to answer your question as thoroughly as I can. The item “Antique Tycos Short & Mason 2021 London Pocket Altitude Barometer in Box with Case” is in sale since Sunday, April 29, 2018. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “siliconvalet” and is located in Liberty, Maine. This item can be shipped to United States.