Keep precise records of barometric pressure readings with this extraordinary German-made Dampened Deluxe Quartz Barograph. This 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. 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.
- Both inch and millibar charts are available
- Eight diaphragm bellows provide maximum sensitivity & precision
- Hinged mahogany case with glass sides provides easy access to chart drum
- Quartz movement requires no winding
- Chart duration: 7 days
- Included are: One-year supply of weekly inch charts (108), AA battery, one black felt tip pen (451) (lasts 6-9 months), Damping fluid (110)
- Millibar charts (107) available separately