Ambient Weather Fischer 1436R-12 Open Face Wood and Brass Barometer, 6 1/2" The USA version of this instrument displays the metric units (mbar) on the inner scale and imperial units (in Hg) on the outer scale. This beautiful nautical instrument is made from the finest materials, and is at home with any marine decor. The open face barometer features a bezel made of diamond polished brass, with a mineral glass cover. The wooden case is stained and varnished and includes a brass suspension ring.