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.