Surveying level, British, 1826-1866

Made:: 1826-1866 in Fleet Street

maker:: Troughton and Simms Limited

18-inch level used for levelling second order lines, Troughton & Simms, London, England, 1826-66.

Details

Category:: Surveying

Object Number:: 1912-198

type:: surveying level

credit:: Ordnance Survey

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Parts

Part of surveying level, British, 1826-1866

Part of surveying level, British, 1826-1866

Cap for 18-inch level by Troughton and Simms, London, England, 1826-1866.

Measurements:: overall: 92 mm 53 mm, .12kg

Materials:: tin plated , steel (metal) and brass (copper, zinc alloy)

Object Number:: 1912-198 Pt1

type:: instrument component and surveying level

Image ©: The Board of Trustees of the Science Museum

Box for surveying level, British, 1826-1866

Box for surveying level, British, 1826-1866

Box for 18-inch level by Troughton and Simms, London, England, 1826-66.

Object Number:: 1912-198 Pt2

type:: instrument case

Tripod for surveying level, British, 1826-1866

Tripod for surveying level, British, 1826-1866

Tripod for 18-inch level by Troughton and Simms, London, England, 1826-66.

Object Number:: 1912-198 Pt3

type:: instrument component and tripod - stand

Image ©: The Board of Trustees of the Science Museum

Part of surveying level, English, 1826-1866

Part of surveying level, English, 1826-1866

18-inch level used by the Ordnance Survey for levelling second order (Topological) lines, by Troughton & Simms, London, England, 1826-66.

Measurements:: overall: 195 mm x 660 mm x 120 mm, 5.805kg

Materials:: brass (copper, zinc alloy) , steel (metal) , glass and cotton (fibre)

Object Number:: 1912-198 Pt4

type:: instrument component and surveying level

Image ©: The Board of Trustees of the Science Museum