ATCO Compensated Aneroid Pocket Barometer & Altimeter with Case & Satchel. This antique ATCO Gilt Cased Pocket Barometer Altimeter is in it’s original leather case, it was often used for Hot Air Ballooning, Mountain Climbing, or walking. Circa 1890s – 1900s. This is an aneroid barometer, a device used for measuring atmospheric pressure without the use of fluids. It consists of a partially evacuated metal chamber, the thin corrugated lid of which is displaced by variations in the external air pressure. The Atco Pocket Barometer is in very good, pre-owned, working condition. I tested the barometer using the simple bag test and the hand moves when the pressure changes. There are no chips or cracks to the crystal glass; there is a 1mm scratch (see photo). It appears years ago the metal hoop was removed, hence the leather satchel it’s being stored in. The gold colored casing is in pretty good condition; it is brass with gold plating. There are 2 rub spots near the bezel from being moved in the tight case. The leather case has obvious signs of wear and no longer has the clasp; you can see the wood where the clasp once was. The case still does a great job protecting the instrument. The brown satchel looks newer, maybe 1940s-1960s? The barometer with it’s case fit perfectly in the satchel which show some signs of wear. Dimensions: (Barometer only) 2. ½”W x 3″H (with bezel) x 1Thick Weight: 9 oz. Brass with gold plated c. Ase, rotating altitude bezel. For antiques, vintage, MCM, retro, toys media & moreThanks for looking! The item “Antique ATCO Compensated Aneroid POCKET BAROMETER ALTIMETER with Case & Satchel” is in sale since Friday, October 22, 2021. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “angiesvintiques” and is located in Sacramento, California. This item can be shipped to United States.

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