Analog barograph 807550

Mahagoni/Brass 4 or 8 chambers Stylus damping Optionally with gold-plated or chromed metal parts The mechanical barographs of BARIGO have a quartz movement in the brass drum. This quartz movement makes the drum rotate once a week, while a damped felt tip pen records the changes in air pressure on a graph paper. The measurement is carried out by eight round diaphragms placed on top of each other. The high-quality mahogany case has been polished several times and lacquered to a high gloss. The parts inside the case are made of brass. Optionally, the parts are painted black or gold-plated. Diagrams and felt tip pens for 1 year are included.