Ambient Weather WS-GL025 Porthole Collection Weather Center with Temperature, Humidity and Barometer This traditional piece is at home in any fine study, library, upscale restaurant or school. Includes wall mount or desk stand The rich, solid wood framed mahogany weather station measures temperature (in-Degree F and-Degree C), barometric pressure (mbar and in Hg) and humidity (-percent) and includes a quartz clock (battery included) This beautifully hand crafted three instrument plaque can be wall mounted or stand free on a desk or shelf The alloy porthole bezel with zirconium PVD finish will never tarnish or discolor. The case is made of brass and the opening port is made of a high quality alloy The hinged bezel has a beveled glass lens and screw down fastener. This allows access to the movements for winding, battery change over or adjustment without removal from the bulkhead. Allows for sea-level barometric pressure correction up to 3,000 feet