Technology Barometer &c Alexander Hogg c.1788
Horizontal, Brownings, Clepsydra, Diagonal, Wheel
Antique Copper engraving engraved by Wilson Lowry (1762-1824), printed on hand made hemp and flax laid paper.
Published "According to an Act of Parliament" by Alexander Hogg, at the Kings Arms No 16 Paternoster Row, London circa 1788
Condition= Excellent . Plate mark complete. Light Embossed stamp in top left corner
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems and frontal boundaries.
Wilson Lowry was a line engraver specializing in scientific and technical illustrations. He was apprenticed called Ross in Worcester. He moved to London in 1780. He is credited with the invention of a device for hatching on plates and one of the earliest to use steel.
Plate mark = 23.5 x 38 (9.4 x 15.2 inch)