J.B. Dancer, Manchester c1860

A scientific barometer on the Fortin principle signed on the silvered scale J.B. Dancer, Optician, Manchester No. 282.

The instrument has a black painted tube with a thermometer mounted on the front.

The barometer scale reads from 27 to 32.5 inches of mercury, the thermometer scale from 25 to 110 degrees Fahrenheit.

The instrument is mounted on a mahogany backboard with white reflectors to improve reading accuracy. Backboard size 44 inches x 5½ inches.

The barometer has a replacement glass reservoir.

Below you can see the thermometer, the lower part of the barometer and the name on the silvered scale.

John Benjamin Dancer supplied instruments to the famous scientists John Dalton and J.P. Joule.

Stock No. C1072