This extraordinary German-made Dampened Deluxe Quartz Barograph, has mechanical barograph with eight round diaphragms measures variation in the air pressure and transfers the information very precisely through a system of mechanical levers to the writing arm.
Keep precise records of barometric pressure readings with this extraordinary well made instrument.
The battery operated quartz movement rotates the solid brass drum once a week, requires no winding and is more accurate than key-wound movements. The conventional ink nib and messy ink bottle are replaced by a convenient felt tip pen which lasts 6 to 9 months. This barograph model includes a bottle of oil damping fluid for the arm to avoid incorrect readings when on ships or yachts at sea. The elegant mahogany and glass case is polished to a high luster finish and is hinged for easy access to the movement for change of paper and pen.