The Wempe Cup series consists of a porthole ship's clock with battery-powered quartz movement, a barometer, and a comfortmeter. Available in polished and lacquered brass or chrome-plated. Specifications Instrument: Barometer Size of clock face: White clock face with black numerals Material: Brass Movement: Barometer Scale: Atmospheric pressure in hPa/mmHg Design of clock face: White clock face with black numerals Barometer - Accuracy: +/- 2 hPa between 980 - 1030 hPa' Barometer - Measuring range: 940 to 1060 hPa, 700 to 790 mmHg Barometer - Number of aneroid capsules: 1 Barometer - Range of operating temperature: +4°C to +50°C' Barometer - Temperature error: +/- 2,5 hPa at sudden change in temperature of +/- 10°C' About Wempe "Leisure sailors worldwide rely on the quality and precision of their instruments and many famous cruise liners, mega yachts and German and international cargo, research and navy vessels are equipped with Wempe clock systems. Wempes devotion to their fascination of sailing and the exacting task of manufacturing precise maritime instruments, and nautical timekeeping systems, is why they are the market leader and pioneer in developing and creating new products."