‘Trans-Pac’ GPS receiver, 1990-1991
1990-1991
Combined graphometer and plummet clinometer, 1663.
1663
100 Link Steel Surveying Chain, 1784.
1784
Plane table outfit by Benjamin Cole
1750-1766
Telescope used by General Roy for measuring base line to link Paris and Greenwich
Magnifying stereoscope, 1940
1940
Altazimuth theodolite by Benjamin Cole & Son
1755-1765
Graphometer with magnetic compass
1710-1720
Surveyor's pocket sextant.
1795-1805
Pedometer by Spencer & Perkins
1775-1794
Simple theodolite
1600-1630
Simple theodolite
1600-1630
Theodolite used for the Principal Triangulation of Great Britain
1791
Pocket aneroid barometer, unsigned, in case
Galton sun signal by Potter
1851-1900
14" Canadian Pattern Y-level
1920
Cooke Tavistock theodolite by Vickers Instruments
6 inch altazimuth theodolite by W. & T. Gilbert
1840
Heliograph by Cary, c.1830
1830
Cross head with compass and side-mounted spirit level
1850-1899
Schatz scale reading microscope
1914
Double-mirror heliotrope (Spiegelkreutz-heliotrop) for geodetic work
1822
Surveying aneroid barometer
1940
Field aneroid barometer
McCallam's patent distance indicator, 1864
1864
Altitude instrument patented by W. Barclay, 1825
1825
7 inch altazimuth theodolite by Thomas Jones
1801-1850
Repeating Theodolite
1875
Paulin aneroid barometer, c. 1950. In Case.
1950
Set of six targets with backing plates
1960
Microptic theodolite
1970
5-inch transit theodolite
1944
Brass cross-head and compass, 1800
1800
Wooden foot rule, farmers staff
Dummy unit of Magellan Global Positioning System (GPS) Trailblazer XL hand-held system
1997
Aneroid Barometer, graduated in centibars, for land use
Gyro azimuth circle
circa 1947
Everest theodolite
circa 1855
Octagonal brass crosshead with compass
1850-1900
Level by Cooke Troughton and Simms Ltd of York
1970-1975
Layers of black card forming early model of micromap
Layers of grey card forming early model of micromap
Hydrographic station mark
1920
Metallic blue version of Mk I Micromap (labelled 31).
Polystyrene shape for micromap
Curved sheet of translucent plastic with rivetted lens
Black version of Mk I Micromap with black and grey speckled top
Clear plastic housing for early prototype Micromap
Black acrylic moulding with red and white trim
