Search

any of several automatic recording barometers, of which the most common is the aneroid barograph.
Historical Examples

barograph, bar′o-graf, n. a barometer which records automatically variations of atmospheric pressure.
Chambers’s Twentieth Century Dictionary (part 1 of 4: A-D) Various

A self-recording barometer (usually an aneroid) is called a barograph.
Meteorology Charles Fitzhugh Talman

The movements of the box are communicated by levers to a pointer moving around a dial (or to the recording pen, in the barograph).
Meteorology Charles Fitzhugh Talman

The general care of the barograph is the same as that of the thermograph.
Practical Exercises in Elementary Meteorology Robert DeCourcy Ward

Jack glanced at the barograph on the dashboard in front of him.
The Boy Inventors’ Radio Telephone Richard Bonner

The barograph showed them to be rising a hundred feet a minute.
The Boy Scouts for Uncle Sam John Henry Goldfrap

Tom repeated this maneuver several times, until a glance at his barograph showed that they had but a scant sixty feet to go.
Tom Swift and his Wireless Message Victor Appleton

“Wrong,” said Jack, glancing at the barograph on the dashboard in front of him.
The Boy Inventors’ Radio Telephone Richard Bonner

Tom was anxiously watching the barograph, to note their height.
Tom Swift in the Caves of Ice Victor Appleton

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.
Tom Swift and his Air Scout Victor Appleton

noun
(meteorol) a self-recording aneroid barometer
barograph
(bār’ə-grāf’)
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.