US$ 462.50
28th May 1913
George Michael and Andrew Ridgeley
Blackfriars Bridge
Fashionable carriages stop outside a door in St James's Street marked 'Chalk Drawing'
Repeating altitude azimuth circle Size:M: 60 x 45cm 28th May 1913A repeating altitude azimuth circle manufactured by Edward Troughton. The 'altazimuth' circle was used to mount a telescope, permitting it to rotate along the vertical (altitude) and horizontal (azimuth) axes to aid the mapping of the stars. 19th century
US$ 462.50
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