barograph, bar′o-graf, n. a barometer which records automatically variations of atmospheric pressure.
A self-recording barometer (usually an aneroid) is called a barograph.
The movements of the box are communicated by levers to a pointer moving around a dial (or to the recording pen, in the barograph).
The general care of the barograph is the same as that of the thermograph.
Jack glanced at the barograph on the dashboard in front of him.
The barograph showed them to be rising a hundred feet a minute.
Tom repeated this maneuver several times, until a glance at his barograph showed that they had but a scant sixty feet to go.
"Wrong," said Jack, glancing at the barograph on the dashboard in front of him.
Tom was anxiously watching the barograph, to note their height.
It's only a little auxiliary dingus I put on to make it easier to read the barograph, but I think I'll go back to the old system.
An instrument that continuously records changes in atmospheric pressure. A barograph typically consists of an aneroid barometer connected to a pen; the pen is in contact with a piece of paper mounted on a cylinder that rotates once on a daily or weekly basis. As the atmospheric pressure changes, the pen is displaced in proportion to the change, thus a record of the pressure is traced onto the rotating sheet of paper.