The Fastnet range of porthole instruments are mounted onto mahogany-coloured wooden boards with brass corners. They feature white faces with black hands and roman numerals, and 12cm cases which have been treated with a special tarnish free coating so that they do not require polishing. Quartz clock movements use 1x AA battery (not supplied). Barometers display pressure in millibars and inches. Board measures 33x18cm.
