The Plane-table and Its Use in Topographical SurveyingD. Van Nostrand, 1869 - 79 páginas |
Dentro del libro
Resultados 1-5 de 18
Página 16
... sketch giving the triangulation points and the ap- proximate shore line ( comprised in the area to be sur- veyed ) being before the draughtsman , he proceeds as follows : The limits of the sheet having been determined , the middle ...
... sketch giving the triangulation points and the ap- proximate shore line ( comprised in the area to be sur- veyed ) being before the draughtsman , he proceeds as follows : The limits of the sheet having been determined , the middle ...
Página 20
... sketching , table of heights , extra pencils , and rubber ; everything being at hand and well protected . When the table is set up the dividers and pencils are taken from the case and laid upon the table , and the scale drawn out as ...
... sketching , table of heights , extra pencils , and rubber ; everything being at hand and well protected . When the table is set up the dividers and pencils are taken from the case and laid upon the table , and the scale drawn out as ...
Página 23
... sketching one somewhat softer is used . If the table and alidade be in proper con- dition , the contact of the fiducial edge with the paper will be perfect throughout its whole length , and in drawing a line along the edge care must be ...
... sketching one somewhat softer is used . If the table and alidade be in proper con- dition , the contact of the fiducial edge with the paper will be perfect throughout its whole length , and in drawing a line along the edge care must be ...
Página 28
... sketching is now done , omitting nothing that can be completed from this point ; the alidade removed , the table raised , the signal put up , and the party leaves for the next station . Sometimes it is necessary to start the chain from ...
... sketching is now done , omitting nothing that can be completed from this point ; the alidade removed , the table raised , the signal put up , and the party leaves for the next station . Sometimes it is necessary to start the chain from ...
Página 29
... sketching , determination of height , etc. , are executed here as at S , and , indeed , at every point occupied , ―it being desirable , if possible , never to occupy a a station more than once . The intersection of two lines is not ...
... sketching , determination of height , etc. , are executed here as at S , and , indeed , at every point occupied , ―it being desirable , if possible , never to occupy a a station more than once . The intersection of two lines is not ...
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 |
Términos y frases comunes
accuracy adjustment alidade axis brass Brevet Bridge centre chain Chemistry circle clamp Cloth Coast Survey construction contours correct cross-hairs declinatoire depression detail determined diagrams direction distance draw edition elevation engravings experiments Feet fiducial edge field formula forward line ground heights hills horizontal Hypsometry Illustrated instrument intersection Iron J. P. WHITNEY line of sight lines drawn lithographic plates manufacture marked measured ment meridian Merrimack River method metres metric system middle point Mines objects observed paper parallel pencils perpendicular placed plane Plane Table plane-table plotted points point occupied position PRACTICAL TREATISE Prof projection Railway resection revised and enlarged rule scale sheet side sketching slope station Steam Engine steel straight edge Students Submarine surveyor taken tangent screw Telegraph telemeter telescope tion TOPOGRAPHICAL SURVEYING triangle of error triangulation points true point Trusses U. S. Army U. S. Navy vertical arc wood-cuts ZERAH COLBURN