An excellent, pocket altimeter, barometer by Moritz Pillischer, London(1850-87). In excellent condition and in good working order. Has the rare crown adjustment feature. Altidude ring inside the instrument is rotated by turning the pocket watch style crown. The little metal piece for the case catch is missing from the lid, otherwise, truly excellent. Instrument in pocket watch size, 1 15/16 in diameter. The item “Circa 1870 Moritz Pillischer Pocket Barometer Altimiter with Crown Adjust in Case” is in sale since Friday, March 04, 2016. This item is in the category “Collectibles\Science & Medicine (1930-Now)\Scientific Instruments\Barometers”. The seller is “1767mechanician” and is located in Bellefonte, Pennsylvania. This item can be shipped to United States.