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Made in Glasgow

Postcard of Clinometer.
© National Museums Scotland


A clinometer is a surveying instrument used for measuring the angle of inclination. This brass example, also known as a drainage level, was made around 1855 by Gardner & Co. of Glasgow and retailed by H.A Thompson of Lewes in Sussex.

The clinometer (pictured here in its wooden case) has a telescopic sight, bubble level and silvered scale. Engraved on the scale is 'REGISTERED NO 2602 DEC 28TH 1850' and 'THOMPSON/ LEWES'.

T.R. Gardner registered the design of this special level - used when installing drainage pipes - in December 1850.

Record details

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Online ID: 000-100-102-715-C
Image Rights Holder: National Museums Scotland
Project: 0098: National Museums Scotland
Project description | View all records in project
Ref: National Museums Scotland  T.1968.59
Date: Around 1855
c. 1855
Material: Brass, silvered scale. Inscription: REGISTERED No 2602 DEC 28TH 1850 THOMPSON / LEWES
Dimensions: 2.75" H x 14.13" L x 6.75" W; 13.38" L x 0.88" D
What: Clinometer / box
Subject: 5. CARTOGRAPHY, Surveying (Departmental Classification)
Who: H.A. Thompson (Inscribed on the clinometer)
T.R. Gardner, Glasgow (Maker)
Where: England, Lewes
Scotland, Lanarkshire, Glasgow
Description: Brass clinometer, in a box, used in surveying, designed and registered by T. R. Gardner, Glasgow, c. 1855
  • Clarke, T.N., Morrison-Low, A.D. & Simpson, A.D.C. Brass & glass scientific instrument making workshops in Scotland as illustrated by instruments from the Arthur Frank Collection at the Royal Museum of Scotland. Edinburgh: NMS, 1989. pp 166,170,172 
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