Mahogany octagon aneroid barometer of the 1930's wall mounted design with serial number to the reverse.
Marked 'S&M', STORMOGUIDE', 'COMPENSATED FOR TEMPERATURE', 'CAPTAIN O.M WATTS Ltd. LONDON', 'MADE IN GT BRITAIN', 'INTERNATIONAL COPYRIGHT (COPYRIGHT 1932).
The copyright covered the unique rising and falling forecast text and the specific arrangement of the dual circle dial.
Altitude adjustment plate to the reverse, calibrated for station heights from sea level to 3000 feet.
Mahogany surround with bevelled glass and polished brass bezel, Red telltale and main pressure pointer.
Measures 23cm wide x 20cm high x 7cm deep.
Weighs 1.5kgs.