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Tropical sunshine recorder Mk IIIA by Casella

1959

Night sky camera by Casella

1939

Psychrometer by Casella

Dial for Anemometer 'Meter No.3'

1940-1960

Assmann psychrometer by C. F. Casella

1919

Clockwork aspirated psychrometer

Sensitive' anemometer

1950

Portable 3-cup anemometer by Casella London

1963

Piche evaporimeter by Casella

[1965]

Whirling psychrometer

1966

Hygrometer slide rule no T8563/1

1960-1970

Polymeter, relative humidity meter

1950-1970

Eclimeter, British, 1910-1950

1910-1950

Sunshine Recorder for Tropical Latitudes by Casella, 1925

1925

Anderson's slide rule

Aspirated psychrometer by Casella

1930

Frost point hygrometer

1951

Assmann psychrometer by Casella

1944

Shielded Campbell-Stokes sunshine recorder Mk II

1952

C.F. Casella and Co. Ltd personal air quality sampler, 1971-1980

1971-1980

Maximum and minimum thermometer by C.F.Casella

1908-1913

Clockwork aspirated psychrometer, Mk3

1971

Visibility meter MkII by Casella London

1943

Run of wind anemometer by C.F. Casella

1940-1950

Bimetallic actinograph, M.O. Mark III, by Casella, 1955

1955

School rain gauge by C.F. Casella and Co. Ltd

1936

Reeve's patent night marching watch

1916

White & Bean's area scale on transparent celluloid

1907

Whirling psychrometer

1940-1945

Owens Dust Counter

1960-1969

Stand and fan for hand-operated Assmann psychrometer

1952

3 cup sensitive anemometer by C.F. C (C.F. Casella and Co. Ltd)

1942

3 cup sensitive anemometer

1942

J.S. Dines' recording theodolite

1910-1920

Case with 3 photothermograph scales

1957

Bennett-Casella visibility meter by C.F. Casella and Co. Ltd

1949

Frost point hygrometer

1951

C.F. Casella and Co. Ltd cascade type dust grader, 1961-1970

1961-1970
Revolution and Speed indicator, Mk. IV. Fitted to Casella Instrument Board

Revolution and Speed indicator

Discharge tube, by Casella, European, 1900-1925

Glass discharge tube

1900-1925
Frame for whirling psychrometer, by Casella, London. Used by Home Office Scientific Advisory Branch.

Frame for whirling psychrometer

1920-1940
Bent-stem earth thermometer by C.F. Casella and Co. Ltd, c. 1925.

Bent-stem earth thermometer by C.F. Casella and Co. Ltd

1925
Template pricker, 1950-1970

Template pricker, 1950-1970

1950-1970
Earth thermometer, maximum and minimum, mercury and alcohol-in-glass, fahrenheit, tube bent 8 inches above bulb. Made by C.F. Casella and Co. Ltd, London. Marked MO 18203, 8974 and NPL25 certified in 1925. Min scale 20 to 125, max scale 15 to 100

Earth thermometer

Minimum thermometer, spirit-in-glass, sheathed, degrees absolute, by C F Casella & Co Ltd, London. Marked MO5, KO with handwritten label "Constantly getting out of order Jan 26/17" . Scale 240 to 310. Dated 1917

Minimum thermometer

1917
Spirit level by C.F. Casella and Co. Ltd., London, with Mahogany box and leather case no. 8314, early 20th century

Spirit level by C.F. Casella and Co. Ltd.

5-inch transit theodolite by Casella, 1924, complete, in two fitted boxes: (base) 36 x 26 x 24cm, (optics) 30 x 22 x 23cm

5-inch transit theodolite by Casella

1924
Three packets of hygrometer wicks, T8568/2, T8750/1, T6420/1, C 1966

Three packets of hygrometer wicks

[1966]
Field Meteorology Set, Mark III, by C.F. Casella and Co. Ltd, in carrying case, 1942. With calibration charts, tables for logarithms and relative humidity, and a 1942 Observer's Handbook.

Field Meteorology Set

1942
Frame for whirling psychrometer, by Casella, London

Frame for whirling psychrometer

1920-1940