Portable transit theodolite, British, 1823-1841

Surveying

1823-1841

Prototype Micromap viewer, 1995-1998

Surveying

1995-1998

Micromap map card, 1995-1998

Surveying

1995-1998

Cardboard model of micromap viewer, 1995-1998

Surveying

1995-1998

6 inch transit theodolite by Henry Barrow & Co.

Surveying

1849-1851

Mine surveying sighting disc, German, 1920-1930

Surveying

1920-1930

Prismatic magnetic compass, British, 1827-1848

Surveying

1827-1848

Topometer, combined box sextant & range-finder, British, 1905-1920

Surveying

1905-1920

Mining surveying level target, British,1930

Surveying

1930

Surveying rangefinder

Surveying

1958

Acetylene signal lamp with heliograph

Surveying

1910

theodolite, numbered 122186, with WATTS trademark,

Surveying

1970

Part of Lean type mining dial, 1801-1825

Surveying

1801-1825

Compass-clinometer, Bagot's Patent (No 2227 of 187

Surveying

Lens for 6-inch altazimuth theodolite

Surveying

1801-1850

Stereo-plotter designed by F.V. Thompson

Surveying

1908

Box type pocket sextant

Surveying

c. 1860

Metal clamp from the 3-foot geodetic theodolite

Surveying

1791

Tapes measuring - repair outfit No.2, by James Che

Surveying

1955

KARTI plotting table

Surveying

1965

7.5 inch station pointer with reading microscope b

Surveying

1801-1900

Marching compass

Surveying

Waywiser by John Smeaton, England, mid 18th centur

Surveying

1701-1800

Bulb assembly for survey beacon lamp

Surveying

Bronze triangulation station mark, Canadian, 1920

Surveying

1920

Box type pocket sextant.

Surveying

1845-1855

Coincidence adjustment of a German 1-metre base ra

Surveying

Combined level & clinometer, German, 1755

Surveying

1755

Abney type level, designed by William Abney, by El

Surveying

1880

Optical opposite, British, 1840-1850

Surveying

1840-1850

Mining dial, English, 1828-1873

Surveying

1828-1873

Galton sun signal

Surveying

1851-1900

Johnson's "Patent Measurement Indicator"

Surveying

1870-1920

One Appleyard barometer and altimeter, with 3 adju

Surveying

Eckhold omnimeter

Surveying

1868-1900

Plummet level, French, 1945-1960

Surveying

1945-1960

Stand for heliograph

Surveying

1900-1911

McCallam's patent distance indicator, 1864

Surveying

1864

Altazimuth theodolite by William Cary

Surveying

Everest theodolite, 6.5 inch horizontal plate, by

Surveying

c. 1855

Map measurer, Morris Patent

Surveying

Folding Prismatic Compass, 1846-52

Surveying

1846-1852

Eyepiece for levelling a tripod stand above a fixe

Surveying

1960

Weldon rangefinder

Surveying

1900-1914

300- foot tape measure, 1928

Surveying

1928

Micromap viewer, 1995-1998

Surveying

1995-1998

Plane table supplied by supplied by Carl Zeiss (Lo

Surveying

1928

Stand for mining transit theodolite, 1871-1900

Surveying

1871-1900

Heliostat mirror 100cm square with foresight attac

Surveying

1950

Model of a section through an Ordnance Survey data

Surveying

1970-1975