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Silvered glass telescope mirror of diameter 9 1/2 in

1880-1900

Betts' portable terrestrial globe

1860-1870

Betts' portable terrestrial globe

1860-1870

Surveyor's plane table outfit, 1881-1890

1881-1890

Driving clock by Cooke for telescope in fitted box

1868-1880

Weight driven clockwork Cooke governor

1868-1880

Twin reflecting and refracting telescopes on observatory mounting, 1885

1885

Photograph : "Antarctic" altazimuth theodolite by T. Cooke and Sons, as used on Antarctic Expedition 1910

Photograph : "Antarctic" altazimuth theodolite by T. Cooke and Sons

1910

"Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

"Twin Equatorial" Telescope

1885

Spectroscope for "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Spectroscope for "Twin Equatorial" Telescope

1885

Refracting telescope of 6 4/16-inch aperture and 74 inch focal length with mahogany veneer wooden tube by G & S Merz, Munich, 1867-1871. Mounted on German equatorial stand with iron pier and clock drive by Thomas Cooke & Sons, York, dated 1871. Acquired in the 1860s by W. G. Lettsom and sold to Sir Cuthbert E Peek in 1882 who employed Charles Grover to make observation at Rousdon Hall, Devon until 1921. Given to the University of Durham in 1925 before returning to Rousden Hall in 1970, now established as All Hallows school.

Refracting telescope of 6 4/16-inch aperture and 74 inch focal length with stand and clock drive

1867-1871

12 inch Everest pattern geodetic theodolite by T. Cooke and Sons, 1884. With part.

12 inch Everest pattern geodetic theodolite by T. Cooke and Sons

1884

Circular instrument dividing engine designed by Frederick Cooke, at T. Cooke & Sons, London, England around 1890. The cast brass, 28-inch dividing plate, with nine spokes is supported on a heavy wooden tripod stand. The instrument is mechanically similar in design to the large dividing engine completed by Thomas Cooke, the company’s founder in 1865.

Circular instrument dividing engine.

1890-1895

One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society

One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York

One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society

One of two photographs of a siderostat constructed by Messrs Cooke and Sons of York

Astronomical refracting telescope with 3 3/4 inch aperture and 52 inch focal length with finder by Cooke on an altazimuth mount with mahogany stand and case. Accessories include 2 eyepieces, 2 solar filters and a solar wedge (Herschel). A circulation instrument from the Science and Arts Department for use by teachers.

Astronomical refracting telescope with 3 3/4 inch aperture and 52 inch focal length, and case

1880-1890

Everest pattern altazimuth theodolite, 5-inch, with case by T. Cooke & Sons, York, England, 1885-1895.

Everest pattern altazimuth theodolite, with case,1885-1895

1885-1895

Astronomical refracting telescope of 3 3/4 inch aperture and 58 inch focal length by T. Cooke and Sons, York, on an altazimuth mounting with mahogany stand and wooden case for the telescope tube. Accessories include 2 eyepieces, 2 solar filters, solar wedge wedge (Herschel). A circulation instrument from the Science & Arts Department for use by teachers and dated January 1885.

Astronomical refracting telescope of 3 3/4 inch aperture, with mounting, stand, accessories and case

1885

Solar spectroscope with stand and two mahogany boxes by T. Cooke and Sons, York, England, 1881. Used at the Solar Physics Observatory, South Kensington between 1881 and 1912. The set of prisms give a high dispersion equal to 20 prisms, by passing the light through the prisms train four times.

Solar spectroscope by T. Cooke & Sons, 1881

1881

Lathe, treadle operated, with Birch's quick withdrawal, cross slide with vertical motion and rotation, by T. Cooke and Sons, York, c. 1890

Lathe, treadle operated

circa 1890

Photographs (2) of a siderostat constructed by Messrs Cooke and Sons of York, for the Royal Society

Photographs (2) of a siderostat constructed by Messrs Cooke and Sons of York

Two Betts portable terrestrial globes by John Betts, Strand, London

Two Betts portable terrestrial globes by John Betts

1868-1870