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sellingantiques.co.uk
ID #SA914284
FOR SALE
£325
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Cook's Patent Clinometer by W. H. Harling
Hatchwell Antiques
for sale €380     $413
£325
Hatchwell Antiques

Hatchwell Antiques

Sellingantiques Verified Since Sep 2016
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    Furniture & lighting alongside clocks, scientific & optical instruments.
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Id #SA914284
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Cook's Patent Clinometer by W. H. Harling

1900 - 1920
Description

An early 20th century Cook's patent clinometer by W. H. Harling.

Marked: W.V. COOK'S PATENT W H HARLING MAKER LONDON No 118

Width: 152 mm. (6 inches).

Height: 112 mm.

William Henry Harling founded the firm in 1851 at 47 Finsbury Pavement, London. They specialised in making drawing instruments, with a factory at Grosvenor Works, Hackney, London.

Physical Dimensions
Width
15cm (5.91")
Declaration

Hatchwell Antiques has dated this Antique Mahogany Clinometer Level to the 1910s.

Reference Numbers
Sellingantiques Reference
SA914284
Description
An early 20th century Cook's patent clinometer by W. H. Harling.

Marked: W.V. COOK'S PATENT W H HARLING MAKER LONDON No 118

Width: 152 mm. (6 inches).

Height: 112 mm.

William Henry Harling founded the firm in 1851 at 47 Finsbury Pavement, London. They specialised in making drawing instruments, with a factory at Grosvenor Works, Hackney, London.

Width
15cm (5.91")
Date of Manufacture

Hatchwell Antiques has dated this Antique Mahogany Clinometer Level to the 1910s.

Reference Numbers
Sellingantiques Ref
SA914284
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

Relevant Links
PDF SHARE
SAVE
An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm.
1 / 6
Archive I An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm.

Cook's patent clinometer by W. H. Harling

Archive II An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm. View II
Archive III An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm. View III
Archive IV An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm. View IV
Archive V An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm. View V
Archive VI An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm. View VI
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 137
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
137
Sold
10
An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm.
Cook's patent clinometer by W. H. Harling
Ref: SA914284
An antique Cooks patent clinometer constructed from dark polished mahogany with a nickel-silver arc scale and pivoting indicator arm.
Detail View 1
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Archival Detail

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FAQs

A clinometer is a scientific instrument designed to measure angles of slope, elevation, or inclination relative to gravity. Historically utilised in surveying, forestry, engineering, and navigation, these devices allowed cartographers and builders to calculate gradients and heights accurately.

Victorian and Edwardian scientific instruments were typically crafted from dense hardwoods such as mahogany or ebony, combined with lacquered brass or nickel silver components. Precision-engraved arc scales and spirit levels were integrated to ensure accurate measurements and long-term durability.

Authentic period examples feature hand-engraved maker marks, patent numbers, and precise mathematical graduations along the metal arc. Collectors should examine the item for natural patination on metal surfaces, period-appropriate brass fasteners, and period timber joinery.

Scientific instruments function as technical decorative objects when placed on an office desk, bookshelf, or mantelpiece within a study or library setting. Displaying technical antiques against muted backdrop colours or alongside leather-bound books highlights their geometric forms.

Maintain the object in a stable, climate-controlled room away from direct sunlight or heat sources to avoid timber shrinkage. Dust gently with a dry microfibre cloth, and avoid abrasive chemical cleaners that could strip the original metal patina or blur engraved markings.
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