SOLD This is a rare pocket altimeter barometer made by the well-known scientific instruments maker Short & Mason from London for Tycos. On the dial is engraved the scientific instruments dealer name E.B Meirowitz. The rare high altitude barometer dial goes from 30-17 inch/hg and the altimeter scale from zero to 16000 feet adjusted by a bezel. The fine calibration is made by a small screw on the back of the device. The body of the altimeter is made of gilded brass and is in very good condition. The original leather pouch has the initials of the maker near the locking system. Dimensions: 50mm diameter and 18mm height.