Antique Old German Barometer C. 2148 Veranderlich Brass Berometer. Total Diameter is 8. Glass Measures 5 1/2 in Diameter… Glass is clear with No chips or cracks… Plath company was originally founded in Hamburg in 1837 by David Filby, son of an innkeeper in Husum on the west coast of Schleswig-Holstein in North Germany. David Filby traded in nautical literature, charts and sextants imported from England. His father was the pastor of the Michaeliskirche in Hamburg “New Town”, a church known to seamen all over the world as the “Hamburger Michel”. On leaving school he began an apprenticeship as an instrument maker in Hamburg. After completion his apprenticeship, Carl Plath, following the custom of the time, went on his travels to Berlin, Vienna, Prague and Munich before he set up a workshop for the production of surveying instruments in 1857. With his new business Carl Plath concentrated on the manufacture of sextants, magnetic compasses, binnacles and barometers. In August 1887 Carl Plath was awarded a German Reich Patent for his newly developed compass card. The item “C. Plath Antique German Brass Barometer Hamburg No. 2148 Veranderlich Rare” is in sale since Sunday, June 14, 2015. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “saleanddeal” and is located in Great Neck, New York. This item can be shipped to United States.