Rare Alexander Wright / Westminster Fortin Stick Barometer. Circa 1900.

Rare Alexander Wright / Westminster Stick Barometer. Circa 1900.

High quality Fortin Stick Barometer, carrying the Alexander Wright name (No. 585). Scripted / engraved to reverse of top barometer section. Known as Standard Barometer (Fortin).

Extremely rare in original and untouched condition. Full original mercury reservoir. Barometer based on Fortin's* principle, verified by Kew. Beautifully housed within original ebonised / black and glazed opening cupboard, with ceramic light reflective inserts. Three Latches And Mounts At The Top And Bottom.

Please discuss delivery options (this item contains mercury).

*Nicolas Fortin (1750-1831) designed a cylindrical glass reservoir with a leather bottom. With a screw and the leather bottom they managed the mercury level. With a pen in the reservoir the mercury was placed at the tip of the pins which resulted in the zero point of the barometer. This Fortin barometer type was used in laboratory for research.