Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 3
... surface could be accurately represented . An account is also given of the manner of surveying the public lands ; and although the method is simple , it has , nevertheless , been productive of great results , by defining , with ...
... surface could be accurately represented . An account is also given of the manner of surveying the public lands ; and although the method is simple , it has , nevertheless , been productive of great results , by defining , with ...
Page 18
... surface , which is not a plane surface , or composed of plane surfaces , is a curved surface . 8. A solid or body is that which has length , breadth , and thickness ; and therefore combines the three dimensions of extension . 9. When ...
... surface , which is not a plane surface , or composed of plane surfaces , is a curved surface . 8. A solid or body is that which has length , breadth , and thickness ; and therefore combines the three dimensions of extension . 9. When ...
Page 51
... surface is curved , and every line traced on its surface is also curved . If large portions of the surface are to be measured , such as states and territories , the curvature must be taken into account ; and very material errors will ...
... surface is curved , and every line traced on its surface is also curved . If large portions of the surface are to be measured , such as states and territories , the curvature must be taken into account ; and very material errors will ...
Page 55
... surface , which encompasses a ball , that is nearly a semi - sphere , with the plane of its base horizontal . This ball , which is hollow , is firmly connected with the smaller base of of the plate DE , and screws firmly into the a ...
... surface , which encompasses a ball , that is nearly a semi - sphere , with the plane of its base horizontal . This ball , which is hollow , is firmly connected with the smaller base of of the plate DE , and screws firmly into the a ...
Page 56
... surface of the plate FG , rests a clamp which goes round the outer spindle , and which being compressed by the clamp- screw K , is made fast to it . This clamp is thus connected with the plate FG . A small cylinder a , is fastened to ...
... surface of the plate FG , rests a clamp which goes round the outer spindle , and which being compressed by the clamp- screw K , is made fast to it . This clamp is thus connected with the plate FG . A small cylinder a , is fastened to ...
Common terms and phrases
acres adjusted angle of elevation axis azimuth back-sights base line called centre clamp-screw coincide column comp compass Cosine D Cosine Sine Cotang course curve decimal degrees determined difference of level direction divided double meridian distance draw east elongation error example feet field notes figure given angle given line given point ground Gunter's chain half hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection latitude and departure length levelling screws line AC line of collimation logarithm M.
M. Sine marked measure method multiplied natural sines needle object paper parallel passing perpendicular piece of land pins plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side similar triangles spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards