Lot Number : 6142

  •  Mrs Janet Taylor, 104 Minories, London, England - Victorian mahogany cased Sympiesometer c 1860, glazed mahogany case with a cavetto moulded pediment, rectangular silvered register and Fahrenheit temperature scale, hydrogen gas filled syphon tube and a separate sliding vernier calibrated in barometric inches, to the left a separate mercury filled Fahrenheit thermometer and makers signature beneath, circular rotating recording disc within a curved aperture.
Mrs Janet Taylor is recorded as a barometer retailer and navigation teacher in London, England, 1845-1875.
The Sympiesometer patented in 1818 by the Edinburgh barometer maker Alexander Adie was an improved version of Robert Hooke's Thermobarometer. 
The hydrogen gas in the syphon tube is affected by both the temperature and air pressure. In order to take a reading the temperature is taken from the thermometer and the sliding vernier adjusted until the pointer on the top of the vernier corresponds with the temperature on the register scale. The barometric air pressure is then read from the top of the fluid in the syphon tube.   The Sympiesometer was thought to be a safer, reliable and more portable barometer for use primarily at sea.
  •  Mrs Janet Taylor, 104 Minories, London, England - Victorian mahogany cased Sympiesometer c 1860, glazed mahogany case with a cavetto moulded pediment, rectangular silvered register and Fahrenheit temperature scale, hydrogen gas filled syphon tube and a separate sliding vernier calibrated in barometric inches, to the left a separate mercury filled Fahrenheit thermometer and makers signature beneath, circular rotating recording disc within a curved aperture.
Mrs Janet Taylor is recorded as a barometer retailer and navigation teacher in London, England, 1845-1875.
The Sympiesometer patented in 1818 by the Edinburgh barometer maker Alexander Adie was an improved version of Robert Hooke's Thermobarometer. 
The hydrogen gas in the syphon tube is affected by both the temperature and air pressure. In order to take a reading the temperature is taken from the thermometer and the sliding vernier adjusted until the pointer on the top of the vernier corresponds with the temperature on the register scale. The barometric air pressure is then read from the top of the fluid in the syphon tube.   The Sympiesometer was thought to be a safer, reliable and more portable barometer for use primarily at sea.

Description: Mrs Janet Taylor, 104 Minories, London, England - Victorian mahogany cased Sympiesometer c 1860, glazed mahogany case with a cavetto moulded pediment, rectangular silvered register and Fahrenheit temperature scale, hydrogen gas filled syphon tube and a separate sliding vernier calibrated in barometric inches, to the left a separate mercury filled Fahrenheit thermometer and makers signature beneath, circular rotating recording disc within a curved aperture.
Mrs Janet Taylor is recorded as a barometer retailer and navigation teacher in London, England, 1845-1875.
The Sympiesometer patented in 1818 by the Edinburgh barometer maker Alexander Adie was an improved version of Robert Hooke's Thermobarometer.
The hydrogen gas in the syphon tube is affected by both the temperature and air pressure. In order to take a reading the temperature is taken from the thermometer and the sliding vernier adjusted until the pointer on the top of the vernier corresponds with the temperature on the register scale. The barometric air pressure is then read from the top of the fluid in the syphon tube. The Sympiesometer was thought to be a safer, reliable and more portable barometer for use primarily at sea.

Dimensions:
Height: 60cm  Length/Width: 10cm 

Condition Grade: 
1 - Excellent: A lot in excellent condition with no damage (this item could be used or new).
2 - Good: A lot in good condition, possibly with slight wear commensurate with age or minor restoration.
3 - Fair/Good: A lot in fairly good condition but possibly with some wear, damage or restoration.
4 - Fair: A lot likely in need of some restoration or not in working order.
5 - Poor: A lot with heavy wear or damage and not fit for purpose, in need of full restoration or to be broken for parts.
0 - N/A:
2 - Good: A lot in good condition, possibly with slight wear commensurate with age or minor restoration.

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SOLD £300


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Collection
Collect from The Saleroom, York Auction Centre, Murton, York. YO19 5GF.

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