Classic Barograph (Weems & Plath 410C)

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Record barometric pressure with this mechanical German-made Classic Barograph that measures variation in air pressure and transfers the data through a system of mechanical levers t o the writing arm. Housed in a rich mahogany case with glass sides and a polished brass handle, this barograph is equipped with a battery operated quartz movement with 4 diaphragms that rotates the solid brass drum once a week, requires no winding, and is more accurate than key wound movements. The barograph readings are marked on paper charts with a felt tip pen. Both inch and millibar charts are available Mahogany case with glass sides & polished brass handle Quartz movement with 4 diaphragms Requires no winding Chart duration: 7 days Included are: One-year supply of weekly inch charts (121), AA battery, one black felt tip pen (451) (lasts 6-9 months) Millibar charts (120CH) available separately Length: 7.9 in (20.07 cm) Width: 5 in (12.7 cm) Height: 5 in (12.7 cm) Weight: 3.4 lb (12.7 cm) UPC Code: 721002002358 HTS Code: 9025.80.4000 Show more