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The following results matched your search criteria:

1. Octant, 1753.
*Octant, 1753.The octant was developed in the early 1730s by John Hadley. The instrument enabled the observer to make more accurate measurements than had...
2. Portable telescope.
*Portable telescope.A portable brass reflecting telescope, with two eyepieces, one a later replacement, and folding tripod. The telescope can be dismantled and fitted...
3. Nevil Maskelyne (1732-1811), fifth Astronomer Royal (1765-1811).
*Nevil Maskelyne (1732-1811), fifth Astronomer Royal (1765-1811).A graduate of Trinity College, Cambridge, Nevil Maskelyne became assistant to the then Astronomer Royal, Bradley, in 1757. He was ordained in 1755...
4. Mumford's Granary on Deptford Creek.
*Mumford's Granary on Deptford Creek.Mumford's Granary (1897) on Deptford Creek. This is the only surviving part of Mumford's Flour Mills, founded in 1790. The mills received the grain...
5. John Harrison.
*John Harrison.The full title of this engraving is 'John Harrison. From an engraving by Tassaert, published in 1768, after a painting by King. Under the...
6. Marine chronometer, No. 512.
*Marine chronometer, No. 512.Following the work of John Arnold, the London watchmaker Thomas Earnshaw (1749-1829) further simplified the designs of the pocket and marine...
7. Quadrant, c. 1768.
*Quadrant, c. 1768.A brass quadrant, made in London by John Bird c. 1768.
8. Reflecting circle - Borda type, c. 1790.
*Reflecting circle - Borda type, c. 1790.A reflecting circle was used to measure the distance between the moon and certain stars in the 'lunar distance' method of finding longtitude. Trade...
9. To the honourable the Court of Directors of the South Sea Company. This piece being a representation of the fishery of Great Britain.
*To the honourable the Court of Directors of the South Sea Company. This piece being a representation of the fishery of Great Britain.When the South Sea Company was establised in 1711, it was hoped that it would challenge the financial strength of the Bank of England and the East...
10. View from Greenwich Observatory to the North-West.
*View from Greenwich Observatory to the North-West.The prospect of Greenwich Park from the Royal Observatory Greenwich, c.1793. The Observatory was created in 1675 by Charles II. Its main function was...
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