File:Elements of military sketching and map reading (1917) (14763763165).jpg

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Identifier: elementsofmilita00barn (find matches)
Title: Elements of military sketching and map reading
Year: 1917 (1910s)
Authors: Barnes, John Bryson, 1876-
Subjects: Military topography Maps, Military
Publisher: New York : D. Van Nostrand
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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Fig. 26A. 40 ELEMENTS OF MILITARY SKETCHING
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Fig. 34. CONTOURS AND CONTOURING 41 between F and E on the map are closer together thanthe contours between A and E. In other words, thesteeper the ground the closer will be the contour lines,and the reverse (see Fig. 34i^). The following ad-ditional points will assist you in accurately representingground forms by contouring: (a) All points on any contour have the same eleva-tion above datum (Fig. 22). (Z?) In a uniform slope contours are equally spaced. (c) Contours of different elevations do not crossor run into each other, except in case of an over-hanging or vertical cliff. (d) Every contour closes on itself or runs off thepaper. (e) The manner of showing a hill top is by thesmall closed contours in Figs. 34^ and B. if) The manner of showing a saddle (or col) isindicated in Fig. 34^. (g) The manner of showing watersheds is illus-trated in Figs. 34.-^, B and C. (h) Water courses are shown as in Fig. 34Z). It will be seen that watersheds are convex, thehigher contours bulging out to

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  • bookid:elementsofmilita00barn
  • bookyear:1917
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Barnes__John_Bryson__1876_
  • booksubject:Military_topography
  • booksubject:Maps__Military
  • bookpublisher:New_York___D__Van_Nostrand
  • bookcontributor:University_of_California_Libraries
  • booksponsor:Internet_Archive
  • bookleafnumber:49
  • bookcollection:cdl
  • bookcollection:americana
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28 July 2014
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