baro- + -graph
barograph (plural barographs)
- A type of barometer that continuously records air pressure on a sheet or rotating drum
1911, Margaret Burnham, The Girl Aviators' Sky Cruise:
- Thanks to their barograph, however, they could judge their height above the sea.
1913, Captain R. F. Scott, Scott's Last Expedition Volume I:
- At noon the barograph curve turned up and the wind moderated, the sky gradually clearing.