Skip to content
History of Science Museum

Surveyor's Cross and ?Simple Theodolite, by James Search, London, c. 1770-80

Inventory Number 63619


Acknowledgement: © History of Science Museum, University of Oxford, inv.63619

Subject
Surveying
Item type
Object
Provenance
Presented by the Friends of the Old Ashmolean in 1932. Purchased by them from Mrs Alkin. Probably formerly owned by John Thompson, Surveyor, of Witherby, Leicestershire.
Primary inscriptions
"J. Search London"
Physical material
Brass
Object type
Theodolite
Dimensions
Diameter: 405mm Height: 205mm
Inventory No
63619
Accession Number
1932-32

Description

Four arms at right angles with a quadrant scale joining two of them. Each arm has a removable sight; one pair each have alternating slit and thread sights; the other pair consists of a slit sight and a thread sight. Presumably at least an index and possibly a compass are missing. Mounted on a socket.