A Treatise on the Plane-table and Its Use in Topographical Surveying: From the Coast Survey Report for 1865 [appendix No. 22]U.S. Government Printing Office, 1884 - 38 páginas |
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Página 4
... wood , and situated equidistant from each other and from the centre of the table . By means of these screws the board can be removed at will . The arms rest upon the sloping upper face of a conical plate of brass , to which they are ...
... wood , and situated equidistant from each other and from the centre of the table . By means of these screws the board can be removed at will . The arms rest upon the sloping upper face of a conical plate of brass , to which they are ...
Página 5
... wooden block below . This block , which is the top of the stand and is approximate in form to an equilateral triangle , is made of three pieces or hori- zontal layers , and is two and - a - quarter inches thick and very strong . The ...
... wooden block below . This block , which is the top of the stand and is approximate in form to an equilateral triangle , is made of three pieces or hori- zontal layers , and is two and - a - quarter inches thick and very strong . The ...
Página 13
... wood and fidelity in construction must be the main reliance of the surveyor . * PAPER . — In addition to faulty adjustment of his instru- ment the topographer has an additional source of error to guard against , arising from the ...
... wood and fidelity in construction must be the main reliance of the surveyor . * PAPER . — In addition to faulty adjustment of his instru- ment the topographer has an additional source of error to guard against , arising from the ...
Página 21
... woods or swamps , and the weight of the body or arms should never rest upon it . Instructions should be given the men that , under no circumstances , except in cases of threatened danger , should the table or instruments con- nected ...
... woods or swamps , and the weight of the body or arms should never rest upon it . Instructions should be given the men that , under no circumstances , except in cases of threatened danger , should the table or instruments con- nected ...
Página 22
... woods commanding roads or ravines . Piers or draws of bridges , or piles , giving lines up and down streams , with precipitous or bluffy and wooded banks ; trees of unusual appearance in prominent positions , or bearing flags placed ...
... woods commanding roads or ravines . Piers or draws of bridges , or piles , giving lines up and down streams , with precipitous or bluffy and wooded banks ; trees of unusual appearance in prominent positions , or bearing flags placed ...
Otras ediciones - Ver todas
The Plane-table and Its Use in Topographical Surveying Alexander Medina Harrison Vista completa - 1884 |
A Treatise on the Plane-Table and its use in Topographical Surveying: (From ... Vista completa - 1870 |
The Plane-table and Its Use in Topographical Surveying Alexander Medina Harrison Vista completa - 1869 |
Términos y frases comunes
accuracy adjustment alidade Army Artillery axis brass Bridges Capt centre chain circle clamped cloth Coast Survey Construction contours correct cross-hairs curves declinatoire depression determined diagram direction distance draw Engineers engravings feet fiducial edge field Fort Sumter forward line forward signal French ground hachures height hills horizontal Hypsometry Infantry Instructions instrument intersection line of sight lines drawn lithographic Manual marked means measured meridian method metres middle point minutes of arc morocco Navy objects observed operations Ordnance paper parallel pencils perpendicular placed plane table plane-table plotted points point occupied Practical Treatise Prof projection resection revised and enlarged rule scale sheet side sketching slope station Steam straight edge Tactics tangent screw telemeter telescope Text-Book Theory tion topographer Translated triangle of error triangulation points true point U. S. Military Academy U. S. Naval Academy United United States Navy vertical arc VOUSSOIR West Point WILLIAM CAIN wood