File:RamsdenRS theodolite of 1787 microscope detail.png

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English: Detail of the microscopes of the three foot theodelites manufactured by Jesse Ramsden. Image published in "An Account of the Trigonometrical Operation, Whereby the Distance between the Meridians of the Royal Observatories of Greenwich and Paris Has Been Determined. By Major-General William Roy" (January 1, 1790). Now available at archive.org. The illustration is from Plate VI. (The plates are at the end of the bound volume but Plate VI is at page 214 of the PDF file.) The full text description is on true pages 135-160 corresponding to pages 28-53 of the PDF file
Date
Source Philosophical Transactions of the Royal Society of London, volume 80, 1790
Author William Roy
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File:RamsdenRS theodolite of 1787.jpg

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current11:36, 20 February 2015Thumbnail for version as of 11:36, 20 February 2015858 × 704 (341 KB)Peter Mercator (talk | contribs)Truncate image.
18:44, 19 February 2015Thumbnail for version as of 18:44, 19 February 20151,169 × 705 (538 KB)Peter Mercator (talk | contribs)User created page with UploadWizard

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