Combined graphometer and plummet clinometer, 1663.
1663
‘Trans-Pac’ GPS receiver, 1990-1991
1990-1991
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
Simple theodolite
1600-1630
Simple theodolite
1600-1630
Pedometer by Spencer & Perkins
1775-1794
Theodolite used for the Principal Triangulation of Great Britain
1791
Surveyor's pocket sextant.
1795-1805
Accessories for transit theodolite
1849-1851
Dummy unit of Magellan Global Positioning System (GPS) Trailblazer XL hand-held system
1997
"UNIQUE" electrical slide rule
1950-1955
McCallam's patent distance indicator, 1864
1864
Repeating Theodolite
1875
Spirit level graphometer, German, 1870-1876
1870-1876
support for Colby's Compensation Bar
1827
Brass reflecting circle.
1865-1871
Tellurometer, 1978
1978
Surveyor's level with case, German, 1926-1929
1926-1929
Raper type optical opposite, British, 1824-1834
1824-1834
Stadiometer (telemeter), Blakey type, British, 1825-1835
1825-1835
Station-pointer 6 inch with 3 extension arms each 12 ins. long. Engraved "Potter
1870
Traveller's compendium: hinged compass, magnifying lens, dark lens and sundial
4" Leans's dial signed T.B. Jordan
Surveyor's chain with thermometer and spirit level, 1860-1890
1860-1890
Nonien scale reading microscope
1914
Schatz scale reading microscope
1914
Galton sun signal by Potter
1851-1900
Ten second Kern DKM1 transit theodolite
1971
Plane table in canvas carrying case
1971-1980
Set of tools for Tavistock theodolites
1951-1960
Cooke Tavistock theodolite by Vickers Instruments
Double-mirror heliotrope (Spiegelkreutz-heliotrop) for geodetic work
1822
Plummet level
Cross head with compass and side-mounted spirit level
1850-1899
Gentilli type tacheometer, Austrian.
1868-1876
Field aneroid barometer
Coordinating protractor, German, 1905-1914
1905-1914
Transit theodolite, German, 1901-1930
1901-1930
Level by Benjamin Cole
1750
Ten inch station pointer by William Cary
1801-1851
Circumferentor, Italian, 1686
1686
Henderson type surveying Alidade, British, 1893
1893
6-Foot tape measure, British, 1923-1928
1923-1928
Surveying quadrant, 1674.
1674
Telescopic alidade, Italian, 1690-1710
1690-1710
Folding alidade rule, German, 1775-1783
1775-1783