This German made barograph is housed in a rich mahogany case with glass sides and a polished brass handle for easy access. The single "AA" battery operated quartz movement requires no winding and is more accurate than key wound movements. The barograph readings are marked with a felt tip pen that lasts 6-9 months. It is furnished with a one-year supply of weekly charts, AA battery and one felt tip pen.
Case dimensions: 7.75" x 5" x 5.2".
Wt: 3 lbs.
Chart size: 3-5/8".
Chart range: 28.5 to 31 inches.
Chart duration: 7 days.