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Azimuth ring, for master ball compass

Azimuth ring, for master ball compass

1951-1956
One of three photographs of Astronomical universal instruments by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strassbourg Observatory.

One of three photographs of Astronomical universal instruments

1876
Airy's altazimuth telescope and mounting, incomplete

Airy's altazimuth telescope and mounting

1847
One of three photographs mounted in a glazed frame showing instruments at the Royal Observatory Greenwich around 1914. Christie's Altazimuth instrument (universal) made by Troughton & Simms May in 1896, of 8-inch aperture and 8-feet focal length viewed towards the eyepiece

[instruments at the Royal Observatory Greenwich]

1914
One of three photographs of Astronomical universal circles by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strasbourg Observatory.

One of three photographs of Astronomical universal circles

1876
One of three photographs of Astronomical universal instruments by F.W. Breithaupt & Sohn of Hessen-Kassel at the Strassbourg Observatory.

One of three photographs of Astronomical universal instruments

1876
Airy's Altzimuth telescope from the Old Royal Observatory at Greenwich, 1847

Airy's Altzimuth telescope from the Old Royal Observatory at Greenwich

1847
Two handles from Airy's Altzimuth telescope from the Old Royal Observatory at Greenwich, 1847

Two handles from Airy's Altzimuth telescope

1847
Triangular support framework for Airy Altazimuth Telescope, 1847

Triangular support framework for Airy Altazimuth Telescope

1847
One of three photographs mounted in a glazed frame showing instruments at the Royal Observatory Greenwich around 1914. Christie's Altazimuth instrument (universal) made by Troughton & Simms May in 1896, of 8-inch aperture and 8-feet focal length viewed towards the eyepiece and lifted out of its pivots.

[instruments at the Royal Observatory Greenwich]

1914
Photograph of Universal Circle (Altazimuth) used in the English Transit of Venus expedition of 1874 [mounted with 1876-1002/3/4]

Photograph of Universal Circle

1876
Universal instrument by William Simms, London; double circle 15in. diameter, base circle 16in. diameter.

Universal instrument by William Simms

1821-1826