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Surveyor's Level by Joseph Jackson

King George III

1735-60

'Cole Pattern' sun compass

Navigation

1939-1945

Rutherford maximum and minimum thermometer, 1794

Meteorology

1794

'Sitesquare' optical square, British, 1959

Surveying

1959

Improved Patent Portable Theodolite

Surveying

1818-1826

Strut thermometer by J. Hicks, London, MO 50007/29

Meteorology

1929

Strut psychrometer, MO MkII, by J. Hicks, London,

Meteorology

1944

Circumferentor, British, 1792-1800

Surveying

1792-1800

Clinometer with spirit level

King George III

Grass minimum thermometer by Calderara, 1928.

Meteorology

1928

Sympiesometer with 9-inch ivory scale, in case, by L. Casella, 1858.

Air barometer or "sympiesometer", 1858.

Meteorology

1858

Standard Rutherford minimum thermometer by Negretti and Zambra.

Standard Rutherford minimum thermometer

Meteorology

1790 (designed)

Minimum thermometer by Negretti and Zambra.

Minimum thermometer by Negretti and Zambra

Meteorology

Transit theodolite, 6-inch, with magnetic compass, by Troughton & Simms, Fleet Street, London, England, 1826-1850

Transit theodolite, British, 1826-1850

Surveying

1826-1850

Spirit thermometer by Pastorelli, 1849, graduated from -60 degrees F. to +120 degrees F.

Spirit thermometer by Pastorelli, 1849, graduated

Meteorology

1849

Dimenuon thermometer by C.F. Casella and Co. Ltd, c. 1906; a horizontal form of Six's maximum and minimum thermometer, self-registering.

Maximum and minimum thermometer by C.F.Casella

Meteorology

1908-1913

Rutherford minimum thermometer by L. Casella.

Rutherford minimum thermometer by L. Casella

Meteorology

Aeroplane thermometer, 1919.

Meteorology

1919

Six's thermometer by Dring and Fage, 1876.

Six's thermometer, 1876.

Meteorology

1876

Spirit thermometer by Newman, 1850, graduated from -90 degrees F. to +100 degrees F.

Spirit thermometer

Meteorology

1850

Standard maximum thermometer by Negretti and Zambra, 1852.

Standard maximum thermometer by Negretti and Zambra

Meteorology

1852