ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY
Transit instrument. This astronomical device was made by the British instrument maker Edward Troughton (1753-1835) for the Royal Greenwich Observatory, London, England. This diagram is from 'An Introduction to Practical Astronomy', published by William Pearson in several volumes between 1824 and 1829.
Model release not required. Property release not required.