Walnut Cased Barograph

Description

Walnut Cased Barograph, having five glazed removable lid. The mechanical eight-day movement is housed in the drum, fitted with a … more Walnut Cased Barograph, having five glazed removable lid. The mechanical eight-day movement is housed in the drum, fitted with a seven-day chart that covers one full rotation of the drum. The ink trace, or barogram, on the recording paper, is a visual record of changes in pressure. The aneroid barometer mechanism has seven stacked vacuum capsules and utilises a gate suspension, a refinement developed to improve sensitivity. The barograph has a thermometer and glass ink bottle recessed into the case. Dimensions Height 8 Inches Width 14.5 Inches Depth 9 Inches less