The range of porthole instruments sit recessed into mahogany-coloured wooden boards and plinths. They feature cream faces with black hands and roman numerals, and 10cm cases which have been treated with a special tarnish free coating so that they do not require polishing. Quartz clock movements use 1x LR1 battery (not supplied). Barometers display pressure in millibars and inches. The Anchor desk clock is mounted in a smart wooden plinth, angled for easy viewing, with non-slip feet.