£550
A very rare Victorian rosewood mercury Patent Compensating Portable Barometer or mercury sympiesometer by William Harris and Son, London, mid 19th century, the rectangular silvered scale applied with short U-shaped mercury tube terminating with open bulb to left hand column opposing sealed bulb to the right, the centre with mercury tube Fahrenheit and Reaumer scale thermometer and with engraved inscription Harris's Patent Compensating Portable Barometer, the upper margin signed Wllm. Harris & Son, 50 High Holborn, London,
Fees apply to the hammer price:
Room and Absentee Bids:
25.20% inc VAT*
Online and Autobids:
28.8% inc VAT*
