barograph

noun2

1. •
   A type of barometer that continuously records air pressure on a sheet or rotating drum

   • Thanks to their barograph, however, they could judge their height above the sea. — 1911
2. •
   An illuminated glass plate covered by a pressure sensitive sheet, used to measure pressure.

   • A module in the program calculates the load acting on the barograph at the instant of image grabbing . — 1999