Shown is a beautiful. Maker is Short & Mason London. Contained in its original mahogany and glass case. Measures 14 x 9 by approx 8 1/2 inches. Works via a key-wind clock-type movement key included. Winds and runs properly – chart drum rotates correctly. Ive not tried to ink the pen. Additional charts are available on-line or easy to scan the one on the drum now. A very handsome instrument that would be a welcome addition to an y office setting or scientific collection… Please Note: I pack with the greatest care… The item “FINE SHORT & MASON MAHOGANY / GLASS CASED BAROGRAPH” is in sale since Monday, January 02, 2017. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “stuatisl” and is located in Alameda, California. This item can be shipped to United States.