Zenith sector, British, 1840

Made:
1840 in London
designer:
George Biddell Airy

Zenith sector designed by Sir George Airy and used on Principal Triangulation from 1842-1850

Details

Category:
Surveying
Object Number:
1876-1202
type:
zenith sector
credit:
Ordnance Survey

Parts

Glass parts for Zenith sector designed by Sir George Airy and used on Principal Triangulation from 1842-1850

Part of Zenith Sector, British, 1840

Glass parts for Zenith sector designed by Sir George Airy and used on Principal Triangulation from 1842-1850

Object Number:
1876-1202 Pt2
type:
instrument component and zenith sector
Main part of zenith sector designed by Sir George Airy and used on Principal Triangulation from 1842-1850

Part of Zenith Sector, British, 1840

Main part of zenith sector designed by Sir George Airy and used on Principal Triangulation from 1842-1850

Measurements:
overall: 1840 mm x 1500 mm x 650 mm,
Object Number:
1876-1202 Pt3
type:
instrument component and zenith sector

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