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細節
A fine 19th-Century French "Wet/dry" hygrometer,
signed on the enamelled scale HYGROMÈTRE Graphique de LOWE with a maker's logo incorporating the letters A, D, E and a backwards R -- 12in. (30.5cm.) high
See Colour Illustration
The hygrometer is mounted on a mahogany plinth base with a mahogany upright section. The side corners of the front of the upright section are rounded and both have attached a brass centigrade scale: the left-hand scale is for -16°-0-55°C; the right-hand one is for -15°-0-61°C. On each scale is mounted a glass mercury thermometer, the bulb for which is suspended over a brass tube set into the mahogany base. The brass tube on the right contains a glass beaker, and the bulb of the thermometer is partially covered in a thin cloth.
On the front of the upright mahogany section is mounted an enamelled scale for HUMIDITÉ RELATIVE in relation to POINT DE ROSÉE. A brass index arm is mounted beneath and arranged to move up and down to be set against a third centigrade scale on the left of the enamelled face. Moving the tip of the arm will also move a second index on the third centigrade scale to enable one to take a reading from the enamelled scale.
signed on the enamelled scale HYGROMÈTRE Graphique de LOWE with a maker's logo incorporating the letters A, D, E and a backwards R -- 12in. (30.5cm.) high
See Colour Illustration
The hygrometer is mounted on a mahogany plinth base with a mahogany upright section. The side corners of the front of the upright section are rounded and both have attached a brass centigrade scale: the left-hand scale is for -16°-0-55°C; the right-hand one is for -15°-0-61°C. On each scale is mounted a glass mercury thermometer, the bulb for which is suspended over a brass tube set into the mahogany base. The brass tube on the right contains a glass beaker, and the bulb of the thermometer is partially covered in a thin cloth.
On the front of the upright mahogany section is mounted an enamelled scale for HUMIDITÉ RELATIVE in relation to POINT DE ROSÉE. A brass index arm is mounted beneath and arranged to move up and down to be set against a third centigrade scale on the left of the enamelled face. Moving the tip of the arm will also move a second index on the third centigrade scale to enable one to take a reading from the enamelled scale.
注意事項
VAT rate of 17.5% is payable on hammer price plus buyer’s premium