Oak Barographs
Oak Barographs Barographs as we know them now were developed from around circa 1870. The style has not changed hugely, the use of different woods Mahogany and oak being most popular, glazed sides and tops are used and sometimes a drawer for storing spare charts. A “bellows” operates the recording arm and the end of the arm has a nib and ink, which is used to record the readings on the chart.
