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Level by Cooke Troughton and Simms Ltd of York

Level by Cooke Troughton and Simms Ltd of York

1970-1975
Cooke Troughton & Simms M4000 series Universal Microscope serial number M40541

Cooke Troughton & Simms M4000 series Universal Microscope serial number M40541

1963-1965
India pattern clinometer, British, 1924

India pattern clinometer, British, 1924

1924
McArthur portable microscope

McArthur portable microscope

1955-1957
Monocular polarising microscope with triple rotating nosepiece and revolving stage

Monocular polarising microscope with triple rotating nosepiece and revolving stage

1940-1960
Level by Cooke, Troughton & Simms Ltd, 1959

Level by Cooke, Troughton & Simms Ltd, 1959

1959
Level, numbered S04487, Hydrographic Office number 48

Level, numbered S04487, Hydrographic Office number 48

1941-1950
Binocular research microscope

Binocular research microscope

1950-1965
Rolling parallel rule by Cooke

Rolling parallel rule by Cooke

1922-1950
Micrometer

Micrometer

1930-1950
Monocular microscope

Monocular microscope

1950-1965
Aspirated hygrometer by Cooke

Aspirated hygrometer by Cooke

1960
Brass protractor, British, 1941-1950

Brass protractor, British, 1941-1950

1941-1950
'Pathological set' of twelve objective lenses

'Pathological set' of twelve objective lenses

circa 1920-1939
35mm microscope attachment camera

35mm microscope attachment camera

1945-1960
Monocular polarising microscope

Monocular polarising microscope

1950-1965
Binocular research microscope

Binocular research microscope

1945-1960
Set of six targets with backing plates

Set of six targets with backing plates

1960
C.T.S. binocular microscope no. M106977 in case with accessories

C.T.S. binocular microscope no. M106977 in case with accessories

1962
CTS research microscope with serial no.M 201015

CTS research microscope with serial no.M 201015

1950-1960
4" Tavistock theodolite no.41418

4" Tavistock theodolite no.41418

Brass control knob

Brass control knob

circa 1920-1939
Box containing Mechanical Programme Finder (a type of planisphere) consisting of duralumin alloy disc and ten celluloid quadrants; ‘Star Catalogue for 45° Prismatic Astrolabe’; and diagram of ‘45° Astrolabe Value of Coefficient “A”, made by Cooke, Troughton & Simms, York, England, UK, 1930-1940. Designed as an accessory for use with the 45° Prismatic Astrolabe, also manufactured by Cooke, Troughton and Simms. Diagram corresponds to Diagram No. 5072 in the Star Catalogue.

Mechanical Programme Finder for use with 45 degree Prismatic Astrolabe, by Cooke, Troughton and Simms

1930-1940
5" Tavistock theodolite no.VO.552 (geodetic) by Cooke, Throughton and Simms, in fitted box

Theodolite

Toolmaker's microscope and accessories made by Cooke, Troughton & Simms, 1940-45.

Toolmaker's microscope and accessories made by Cooke

1940-1945
Elbow telescope by Cooke, Troughton & Simms, magnification x 8

Elbow telescope by Cooke

Precise levelling staff by Cooke, Troughton & Simms Ltd, York, England, as new condition, c. 1975

Levelling Staff, British, 1971-1980

1971-1980
45 degree prismatic astrolabe by Cooke, Troughton & Simms Ltd. of London & York. No.19921. Boxed, HO 2, with stool

45 degree prismatic astrolabe by Cooke

1941-1950
Variable-amplitude phase-contrast microscope by Cooke, Troughton and Simms, c.1958

Variable-amplitude phase-contrast microscope

1958
Star plate measuring machine (X-Y) with eyepiece labelled Cooke, Troughton and Simms, specially made by Sir Howard Grubb to measure plates taken with the Radcliffe Astrograph (twin 18-inch & 24-inch refractor) for parallax observations. Originally at Radcliffe Observatory (1901-1938), Oxford, then University of London Observatory (1938-1984), Mill Hill, London.

Star plate measuring machine (X-Y) with eyepiece labelled Cooke

1900-1902
Cooke Reversible Transit Circle, manufactured by Cooke, Troughton & Simms Ltd, York c.1928 for the Royal Observatory, Greenwich. Used to measure positions of stars and planets at Greenwich (1933-post WWII), Herstmonceux (post WWII-1982) and Brorfelde Observatory, Denmark.

Cooke Reversible Transit Circle

1925-1933
'Pathological set' of twelve objective lenses and brass control knob, each lens with a known defect, in fitted box, with separate telescope, all by Cooke, Troughton & Simms Ltd, for demonstrating the effects of imperfect lenses, probably c. 1920-1939. Also three home-made 'artificial stars' consisting of ball bearings mounted on rods on a wooden base. (One lens cracked.)

objective lenses and control knob

circa 1920-1939
8 inch reflecting theodolite by Cooke, Troughton and Simms, c. 1930, used by Hotine in East Africa

Eight inch reflecting theodolite and tripod

1930
Planimeter for area measurement. Cooke, Troughton and Simms

Planimeter for area measurement. Cooke

Four branding irons

Four branding irons

4"theodolite by Cooke, Troughton and Simms Ltd of York, numbered 35203

4"theodolite by Cooke

1970-1975
Collimator telescope, 2-inch aperture and 17-inch focal length, with metal stand and mahogany case, by Cooke & Sons, London & York. Used for levelling and adjustment of a transit instrument.

Collimator telescope

1922-1930
Ultra-violet microscope of the Beck-Barnard type with quartz optics and a fluorescent eyepiece, made by Cooke, Troughton & Simms Ltd., York, in 1946. Two units, microscope on separate base, carbon arc-lamp light source and other parts fitted on optical bench track. In use both would have been mounted on an optical table.

Ultra-violet microscope of the Beck-Barnard type with quartz optics and a fluorescent eyepiece

1946
Fishplate profile, standard, end, for BS 80R flat-bottomed rail, angle fishplates, unnumbered Crown Agents series, by Cooke, Troughton & Simms Ltd., for the Engineeing Standards Committiee

Fishplate profile made by Cooke, Troughton & Simms Ltd

Rail profile, standard, end and side, for BS 60R flat-bottomed rail, made by Cooke, Troughton and Simms Ltd., for the Engineering Standards Committee.

Rail profile, Cooke, Troughton & Simms Ltd

Rail profile set, standard, end and side, for BS 55R flat-bottomed rail, NPL No.56092, Crown Agents No.12/55R/1, made by Cooke, Troughton & Simms Ltd. for the Engineering Standards Committee, in original fitted mahogany case.

Rail profile, Cooke, Troughton & Simms Ltd

Microscope accessories by various makers, c.1880-1950. Includes a stage condenser, objectives, micrometers, filters and lids for microscope lenses and objectives.

Microscope accessories by various makers, c.1940

1880-1950
Microprojector with clockwork-driven arc lamp, serial no.M1929, by Cooke, Troughton and Simms Ltd., York, complete with 10X, 20X and 40X objective lenses and 4X eyepiece

Microprojector with clockwork-driven arc lamp

3.5 inch optical scale transit theodolite, model T63, by Cooke, Troughton and Simms, 1937

3.5 inch optical scale transit theodolite

1937
Vickers projection microscope No.II, serial no.305, by Cook, Troughton and Simms of London and York, with accessories

Vickers projection microscope No.II with accessories

Sleeper plate profile, standard, end, BS 12 S, Crown Agents No.10/3 (duplicate), made by Cooke, Troughton & Simms Ltd., Workington profile, 1934, in original fitted mahogany case

Sleeper plate profile made by Cooke, Troughton & Simms Ltd

1934
Rail profile, standard, end and side, for BS 60R flat-bottomed rail, made by Cooke, Troughton and Simms Ltd. for the Engineering Standards Committee.

Rail profile, Cooke, Troughton & Simms Ltd

Rail profile, Crown Agents standard, end and side, for BS 80R flat-bottomed rail, made by Cooke, Troughton & Simms Ltd. for the Engineering Standards Committee

Crown agents standard rail profile

Prismatic astrolabe by Cooke, Troughton & Simms Ltd, York & London, England, 1928-1932

Prismatic astrolabe, British, 1928-1932

1928-1932
Fishplate profile set, standard, end and side, with ledge gauge, for BS 55R flat-bottomed rail, angle fishplates, NPL No.56097, Crown Agents No.12/55R/2, made by Cooke, Troughton & Simms Ltd. for the Engineering Standards Committee, fishplate profiles inscribed Tanganyika Railway, Requisition No.834/1, Dorman Long & Co. Ltd., Middlesbrough, April 1930, in original fitted mahogany case

Fishplate profile made by Cooke, Troughton & Simms Ltd