Category:Astronomical regulator by John Ellicott (Harvard University)

Media in category "Astronomical regulator by John Ellicott (Harvard University)"

The following 2 files are in this category, out of 2 total.

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  Astronomical regulator by John Ellicott, London, 1765, used to observe the transit of Venus in Harvard Yard, 1769 - Putnam Gallery - Harvard University - DSC08005.jpg 3,438 × 5,364; 7.39 MB
  
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  Astronomical regulator detail, by John Ellicott, London, 1765, used to observe the transit of Venus in Harvard Yard, 1769 - Putnam Gallery - Harvard University - DSC08008.jpg 3,648 × 5,472; 8.48 MB