IRS Marine

Mechanical barographs have a solid rotating brass drum that is driven by a quartz battery movement to rotate the drum once
a week. A felt tip pen at the end of the writing arm shows changes in the air pressure on a paper diagram that is wrapped
around the drum. A mechanical barometer movement with four round diaphragms measure variation in the air pressure and
transfers it very precisely through a system of mechanical levers to the writing arm. All barographs come with a supply of
charts and felt tip pens for one year.
Mahogany