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Talk:Plane table

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History ?

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According to the article, currently:

The first known instrument for directly producing a drawing of a site was developed by Johann Richter, also known as Johannes Praetorius[1], a Nuremberg mathematician, in 1610.[2] This circular table, called a tabula praetoriana, mensula praetoriana or Pretorian table, used a simple alidade and allowed a piece of paper to be slipped under the alidade for drawing.

However, according to this page [1], both the idea and the name go back at least 50 years earlier than this. Jheald (talk) 15:53, 30 April 2008 (UTC)[reply]

Interesting - I had the opportunity to do further investigation at the library and found your comments to be true. I have updated the section. --Michael Daly (talk) 19:12, 6 November 2008 (UTC)[reply]
Further to above:
US Coast and Geodetic Survey (1869) Plane Table & its use in topographical surveying, Page 3, Van Nostrand.
Praetorius is described as inventing the plane table in 1537, with the first published description not appearing until 1625 by Leonhard Zubler who ascribes the invention to a stone mason, Eberhart.
Thoughts? --Haruth (talk) 17:54, 21 February 2015 (UTC)[reply]

Sequence ol levelling centering and orientation

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what is tha right ans of above ques? 2405:201:5809:102D:719E:C0E8:B2AC:7B4D (talk) 07:45, 23 April 2023 (UTC)[reply]