Barometer Conservation

Barometers come into our workshop when the mercury vessel has broken. Once all the mercury has been carefully removed we strip the barometer down before replacing the hand-blown glass vessel, re-setting the weights and gauges accordingly. We often find that glass bezels, etc., need either to be cleaned or replaced during this process. We would attempt to source replacement parts with those reclaimed, wherever possible, from other period items. We would only replace with new in the traditional style where reclaimed parts are not available.Front view of onion top banjo barometer

Silvered dial for banjo barometer
Back view of onion top barometer in its corked sate and ready for transport to avoid mercury loss in transit