IMD mercury marine brass barometer around the first quarter 1900s. All mercury has been removed. Glass tube is perfect. IMD stands for Indian Meteorological Department. It appears to be a Kew pattern fixed cistern barometer, except that the cistern is made of brass instead of the [...]
This is an early IMD mercury marine brass barometer around the first quarter 1900s. IMD stands for Indian Meteorological Department. It appears to be a Kew pattern fixed cistern barometer, except that the cistern is made of brass instead of the usual steel. [...]