This pre owned Weathermaster Barometer has a Mahogany finish. Measures humidity, air pressure and temperature. In years gone past this specialist instrument was the main way to predict the weather for the Gardener, Grower and Farmer .
There is a overwhelming tendancy to tap the glass to get a reading but it is not advisable to do this, as it may result in a cracked glass if it is continually done daily.                                                                                                    Instruction leaflet  of  how to set up  and care for your  Barometer and indication of weather changes guide sent   out as well with this instrutment.