Box chronometer, number 874/50318, wood / metal / glass, made by Robert Roskell, Liverpool, England, 1839, used at Sydney Observatory, Observatory Hill, Sydney, New South Wales, Australia
A marine chronometer stored in a wooden box with a hinged lid and leather strap. Inside the storage box is another wooden box with a double hinged lid that holds the chronometer. The top section of the lid opens using a push button to reveal another lid with a glass panel in the top. The chronometer can be viewed through the glass panel. The chronometer sits in a metal ring that is fixed inside the box with two screws. The chronometers mechanism is encased in a circular brass surround. The dial or face of the chronometer is white with black Roman numerals from 'I' to 'XII' marked around the edge. There are two smaller dials towards the middle of the main dial. The upper dial is marked from '' to '8' while the lower dial is marked from '10' to '60'. A circular glass cover sits over the face of the chronometer. On either side of the box is a metal handle. There is a key hole in the centre front of the box and the box has inlaid metal corners and a decorative inlaid metal panel in the top of the lid. Behind the chronometer at the back of the box is a small compartment in which a brass winder key with a cylindrical shaft is stored. There is also a collection of components from the chronometer. The components include clock hands and screws.
Observatory stock number 307.