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Maximum-minimum thermometer
Object No. 86/4042
This maximum-minimum thermometer, which registers the upper and lower temperatures of the atmosphere between readings, probably helped Tooth's brewery maintain the correct temperature range for making beer. This type of thermometer, in which the highest and lowest temperatures between readings are indicated by markers moved by the mercury, was invented by James Six around 1780. In 1902 the maker of this one, Giles Zeal of London, patented the mercury-filled compressible glass chamber at the top, which the user squeezed to reset the thermometer ready for the next reading. Debbie Rudder
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Summary
Object Statement
Thermometer, maximum-minimum, mercury / glass / metal / string, made by Zeal, London, England, date unknown, used by Tooth and Co, Sydney, New South Wales, Australia
Physical Description
Thermometer, maximum-minimum, mercury / glass / metal / string, made by Zeal, London, England, date unknown, used by Tooth and Co, Sydney, New South Wales, Australia A thermometer, made of metal, glass and string, which consists of a rectangular metal case in which sits a metal plate. A U-shaped thermometer is secured on metal plate with small metal band and screws. Engraved onto metal plate is text which reads, 'MIN / 0 / 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 / 110' and to the right 'MAX / 0 / 19 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 / 110'.
DIMENSIONS
Height
234 mm
Width
54 mm
Depth
33 mm
HISTORY
Notes
This thermometer was used by Tooth and Co., Sydney, New South Wales, Australia.
SOURCE
Credit Line
Gift of Tooth & Company Ltd under the Australian Government's Tax Incentives for the Arts Scheme, 1986
Acquisition Date
31 December 1986
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