barometers  

Barograph

 
   

Barometers > Barometer StylesBarometers at eBay • Barograph Photo

 
antique barograph in a wood and glass case
Barographs record the atmospheric pressure over the course of time.  A traditional barograph, such as this one, contains an aneroid barometer and uses a pen to produce a paper chart, called a barogram.  The cylindrical drum, on which the paper chart is mounted, revolves once each day, week, or month.  Today, modern electronic weather instruments have largely replaced mechanical barographs in meteorological applications.
Copyright 2011-2021 Zeducorp.
All rights reserved.

Barograph Picture

vintage marine barograph atop a navigational chart
Vintage Marine Barograph