The solid mahogany case has obliquely recessed barometer scale plates made of silver-plated brass. The English thumb scale runs from 27 to 31 and is divided into tenths. To the left of this scale is a slot in which a manually adjustable vernier can be moved up and down. The signature is on the underside of the left scale plate. The barometer area is shielded by a wooden door, on which a mercury thermometer is attached on the inside with an ivory scale plate and graduations in degrees Fahrenheit and Réaumur. The thermometer scale plate is also signed. The mercury tube is equipped with a narrowing to prevent the so-called 'pumping' of the mercury in rough weather. The palm wood reservoir has a leather bottom with fixed adjustment screw and is shielded by brass. The barometer is equipped with a gimbal suspension system for wall mounting. The instrument has two vertically located suspension holes in the front, so that the barometer can be suspended at different heights in the gimbal ring. For suspension from the ceiling of the ship's cabin, the instrument also has a brass suspension eye at the top. The barometer described here is an early and qualitatively good example of an English ship's barometer. The well-known and prominent instrument maker George Stebbing worked in Portsmouth's Broad Street between 1805 and 1845.