The plate on the back indicates it was patented in 1914. It is unique in that the user sets the altitude of his location to obtain an accurate reading. The body of the instrument appears to be copper but there are indications that it was brass plated. It is in good shape and I have noticed changes in the readings over the past several days. There is minor cracking of the paint on the dial. It is 5 1/8″ in diameter and 2 1/2″ deep.

Antique Short & Mason Octagonal Tycos Wall Barometer. Barometer weighs 59.5 ounces and is 9 3/16″ in diameter and just under 1 7/8″ thick at the edge. There are scratches around the hanger and on the bottom facet. It has been tracking changes in pressure and now reads 30.26 (against 30.15 on my barometer/altimeter). There is an adjustment screw on the back, which I have not used. Altimeter in last photo for reference, not included.

Has wear and marks. Unsure if it works.

For sale an Antique Mahogany Tacos Wall Barometer by Smart & Marsh London, made in GT Britain. Registration or model number on back 2555. Hole with adjustment screw. Mahogany casing needs some TLC but still in good viewing form looking at it from the front. I’m not an expert on barometers, so I’m not 100% sure if it works correctly or not. Width of casing just under 2 inches.

Antique Short & Mason Octagonal Tycos Wall Barometer. Barometer weighs 59.5 ounces and is 9 3/16″ in diameter and just under 1 7/8″ thick at the edge. There are scratches around the hanger and on the bottom facet. It has been tracking changes in pressure and now reads 30.26 (against 30.15 on my barometer/altimeter). There is an adjustment screw on the back, which I have not used. Altimeter in last photo for reference, not included.

Tycos Rochester New York High Altitude Pocket Barometer Altimeter. Altimeter pictured is what you will receive.

Works well – ready for weather! Made for daily use, in all likelihood in a nautical setting. Short and Mason were established in London in 1845.

Tycos Rochester NY, Pocket Barometer. Estate sale find, don’t really know much about it.. What you see is what you get. Any questions or need more pictures, please let me know.

Tycos Short Mason London Pocket Barometer With Unique Case. Do you not know anything about barometers or watches! When you turn the stem the outer ring does go around in a circle if you can tell me how to make the hands move I can check that for you. Measures about 3 inches across. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “kat82899″ and is located in this country: US. This item can be shipped to United States, Fiji, Papua New Guinea, Wallis and Futuna, Gambia, Malaysia, Taiwan, Poland, Oman, Suriname, United Arab Emirates, Kenya, Argentina, Guinea-Bissau, Armenia, Uzbekistan, Bhutan, Senegal, Togo, Ireland, Qatar, Burundi, Netherlands, Iraq, Slovakia, Slovenia, Equatorial Guinea, Thailand, Aruba, Sweden, Iceland, Macedonia, Belgium, Israel, Kuwait, Liechtenstein, Benin, Algeria, Antigua and Barbuda, Italy, Swaziland, Tanzania, Pakistan, Burkina Faso, Panama, Singapore, Kyrgyzstan, Switzerland, Djibouti, Chile, China, Mali, Botswana, Republic of Croatia, Cambodia, Indonesia, Portugal, Malta, Tajikistan, Vietnam, Cayman Islands, Paraguay, Saint Helena, Cyprus, Seychelles, Rwanda, Bangladesh, Australia, Austria, Sri Lanka, Gabon Republic, Zimbabwe, Bulgaria, Czech Republic, Norway, Côte d’Ivoire (Ivory Coast), Kiribati, Turkmenistan, Grenada, Greece, Haiti, Greenland, Yemen, Afghanistan, Montenegro, Mongolia, Nepal, Bahamas, Bahrain, United Kingdom, Bosnia and Herzegovina, Hungary, Angola, Western Samoa, France, Mozambique, Namibia, Peru, Denmark, Guatemala, Solomon Islands, Vatican City State, Sierra Leone, Nauru, Anguilla, El Salvador, Dominican Republic, Cameroon, Guyana, Azerbaijan Republic, Macau, Georgia, Tonga, San Marino, Eritrea, Saint Kitts-Nevis, Morocco, Saint Vincent and the Grenadines, Mauritania, Belize, Philippines, Democratic Republic of the Congo, Republic of the Congo, Colombia, Spain, Estonia, Bermuda, Montserrat, Zambia, South Korea, Vanuatu, Ecuador, Albania, Ethiopia, Monaco, Niger, Laos, Ghana, Cape Verde Islands, Moldova, Madagascar, Saint Pierre and Miquelon, Lebanon, Liberia, Bolivia, Maldives, Gibraltar, Hong Kong, Central African Republic, Lesotho, Nigeria, Mauritius, Saint Lucia, Jordan, Guinea, Canada, Turks and Caicos Islands, Chad, Andorra, Romania, Costa Rica, India, Mexico, Serbia, Kazakhstan, Saudi Arabia, Japan, Lithuania, Trinidad and Tobago, Malawi, Nicaragua, Finland, Tunisia, Luxembourg, Uganda, Brazil, Turkey, Germany, Egypt, Latvia, Jamaica, South Africa, Brunei Darussalam, Honduras.

• Original/Reproduction: Original
• Time Period Manufactured: Pre-1930

Antique Short and Mason Tycos 1800s Pocket Aneroid Mountain Barometer/Altimeter. Measuring altitudes up to 12.000 feet, in a gilt brass case with the original crystal. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “estate-sale-depot” and is located in this country: US. This item can be shipped to United States.

• Original/Reproduction: Original
• Maker: SHORT & MASON