THE PLANE-TABLE AND ITS USE IN TOPOGRAPHICAL SURVEYING1869 |
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Página 18
... carry on a plane - table survey in advance of the triangulation , or where the triangulation has not yet been connected with a base . Under such circumstances it is advisable to draw squares of 1,000 or any specified number of metres on ...
... carry on a plane - table survey in advance of the triangulation , or where the triangulation has not yet been connected with a base . Under such circumstances it is advisable to draw squares of 1,000 or any specified number of metres on ...
Página 19
... carried from station to station by the chief of party , resting on the bend of the arm , or hang- ing easily at the side , and in handling is to be seized by the lower part of the standard , never by the telescope or rule . Some ...
... carried from station to station by the chief of party , resting on the bend of the arm , or hang- ing easily at the side , and in handling is to be seized by the lower part of the standard , never by the telescope or rule . Some ...
Página 20
... carried in an outside breast - pocket , the points of the dividers , when not in use , being thrust into the edge of the rubber . The little metallic patent pencil - holder , pinned upon the left breast of the coat , is used ...
... carried in an outside breast - pocket , the points of the dividers , when not in use , being thrust into the edge of the rubber . The little metallic patent pencil - holder , pinned upon the left breast of the coat , is used ...
Página 21
... carried heedlessly through 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 ...
... carried heedlessly through 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 ...
Página 22
... carrying on an extended survey without the aid of in- termediate points . These are to be determined by the plane - table , and this can be done over a whole or a por- tion of the sheet , either before any filling in of the topo- graphy ...
... carrying on an extended survey without the aid of in- termediate points . These are to be determined by the plane - table , and this can be done over a whole or a por- tion of the sheet , either before any filling in of the topo- graphy ...
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25 cents 50 cents accuracy adjustment alidade axis brass BRIDGES centre chain circle clamp Cloth Coast Survey construction contours correct cross-hairs curves declinatoire depression determined diagram direction distance Edition Engineers engravings Feet fiducial edge field forward line forward signal GEOLOGY OF PENNSYLVANIA Graphical Statics ground HAND-BOOK height hills horizontal Hypsometry instrument intersection line of sight lines drawn lithographic plates marked means measured meridian metal method metres middle point minutes of arc Morocco necessary objects observed Paper covers parallel pencils perpendicular placed plane plane-table plotted points point occupied point sought falls PRACTICAL TREATISE Prof projection QUALITATIVE CHEMICAL ANALYSIS resection right angles rule scale sheet shore line side sketching Slide Valve slope station Steam Steel straight edge surveyor taken tangent screw telemeter telescope tion topographer triangle of error triangulation points true point U. S. Navy vertical arc wood-cuts Yale College ZERAH COLburn
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