Martinique Barometer Weems and Plath The classic porthole style brass barometers from the Martinique instrument collection pair well with any of the brass clocks in the collection! The brass barometers are housed with German-made fully adjustable, temperature compensated aneroid movements in both inch and millibar scales. Calibrated for altitudes to 3,500 feet above sea level Movements for altitudes from 3,500 to 7,000 feet are available by special order for an additional charge complete instructions and mounting hardware provided Limited lifetime warranty