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ID #SA1008196
FOR SALE
£1,600
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Boxwood Thermoscope by Watkins & Hill
Hatchwell Antiques
for sale €1,872     $2,032
£1,600
Hatchwell Antiques

Hatchwell Antiques

Sellingantiques Verified Since Sep 2016
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    Furniture & lighting alongside clocks, scientific & optical instruments.
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    Hatchwell Antiques is a registered member of LAPADA  BADA  CINOA
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Id #SA1008196
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Boxwood Thermoscope by Watkins & Hill

19th century
Description

An early boxwood differential thermometer by Watkins & Hill of London, circa 1825.

Signed to the rear of the thermometer scales: WATKINS & HILL 5 CHARING CROSS LONDON

Both scales divided 50 - 0 – 50.

The thermoscope, or differential thermometer, used to measure the transmission of heat was invented in the early nineteenth century by the physicist Benjamin Thompson, Count Rumford.

Physical Dimensions
Height
37cm (14.57")
Width
26cm (10.24")
Depth
14cm (5.51")
Declaration

Hatchwell Antiques has dated this Antique Boxwood Thermoscope to the Regency era.

Reference Numbers
Sellingantiques Reference
SA1008196
Description
An early boxwood differential thermometer by Watkins & Hill of London, circa 1825.

Signed to the rear of the thermometer scales: WATKINS & HILL 5 CHARING CROSS LONDON

Both scales divided 50 - 0 – 50.

“
The thermoscope, or differential thermometer, used to measure the transmission of heat was invented in the early nineteenth century by the physicist Benjamin Thompson, Count Rumford.
Hatchwell Antiques
Height
37cm (14.57")
Width
26cm (10.24")
Depth
14cm (5.51")
Date of Manufacture

Hatchwell Antiques has dated this Antique Boxwood Thermoscope to the Regency era.

Reference Numbers
Sellingantiques Ref
SA1008196
Hatchwell Antiques
Hatchwell Antiques
Sellingantiques verified Since Sep 2016

Furniture & lighting alongside clocks, scientific & optical instruments.

Dealer Profile

You can view the stock and full dealer information on the Hatchwell Antiques Profile Page

Trade Associations

Hatchwell Antiques is a registered member of LAPADA  BADA  CINOA

PDF SHARE
SAVE
An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs.
1 / 8
Archive I An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs.

Boxwood Thermoscope by Watkins & Hill

Archive II An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View II
Archive III An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View III
Archive IV An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View IV
Archive V An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View V
Archive VI An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View VI
Archive VII An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View VII
Archive VIII An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs. View VIII
Enlarged Archival View
Hatchwell Antiques

Hatchwell Antiques
Telephone 020 7351 2344
Location
533 Kings Road
London
SW10 0TZ
United Kingdom
Dealer Profile Page sellingantiques.co.uk/hatchwellantiques
Verified Since Sep 2016
Items For Sale 145
Items Sold 10
Hatchwell Antiques
Hatchwell Antiques
Verified Since Sep 2016
View Dealer Info
Location: 533 Kings Road, London, SW10 0TZ, United Kingdom
Profile: sellingantiques.co.uk/hatchwellantiques
Verified
Sep 2016
For Sale
145
Sold
10
An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs.
Boxwood thermoscope by Watkins & Hill
Ref: SA1008196
An antique boxwood thermoscope featuring two vertical graduated scales mounted to a turned central column on a circular stepped base with twin glass bulbs.
Detail View 1
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Archival Detail

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FAQs

A thermoscope is an early scientific instrument designed to indicate changes in temperature or radiant heat differentials between two glass bulbs connected by a U-shaped tube. Popularised in the 18th and early 19th centuries, these devices were utilised in physics demonstration lectures and laboratories to show thermodynamic principles.

Early thermoscopes were constructed using dense hardwoods such as boxwood or mahogany for the framework and scales due to their dimensional stability and fine grain. The operational components comprised hand-blown glass tubing attached via brass clips or threaded collars, mounted upon turned timber bases.

Authentic period pieces feature hand-engraved or stamped numeric calibrations directly onto the boxwood scales, alongside hand-blown glass with subtle surface irregularities. Stamps from known London instrument makers on the brass or timber, combined with natural surface patination and mild oxidisation on metal fittings, indicate genuine historical age.

These technical instruments function as accent objects when placed on an office desk, library bookshelf, or console table top. Grouping scientific apparatus alongside historical books, globe stands, or brass objects creates a curated focal point within study spaces.

Keep the instrument away from direct sunlight and heat sources to prevent the boxwood scale from drying out, warping, or splitting. Glass elements should be dusted with a dry microfiber cloth, avoiding liquid cleaning solutions that could compromise original surface finishes or remove engraved scale markings.
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