Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 17
... length , breadth , height , or thickness . 2 A line is lengh without breadth , or thickness . The extremities of a line are called points : a point , there- fore , has neither length , breadth , nor thickness , but position only . 3. A ...
... length , breadth , height , or thickness . 2 A line is lengh without breadth , or thickness . The extremities of a line are called points : a point , there- fore , has neither length , breadth , nor thickness , but position only . 3. A ...
Page 18
... length and breadth , without height or thickness . 6. A plane is a surface , in which , if two points be assumed at pleasure , and connected by a straight line , that line will lie wholly in the surface . 7. Every surface , which is not ...
... length and breadth , without height or thickness . 6. A plane is a surface , in which , if two points be assumed at pleasure , and connected by a straight line , that line will lie wholly in the surface . 7. Every surface , which is not ...
Page 22
... length , two inches wide , and a fifth of an inch in thick- ness . It should be made of a hard material , perfectly straight and smooth . The hypothenuse of the right - angled triangle , which is length , and it is most convenient to ...
... length , two inches wide , and a fifth of an inch in thick- ness . It should be made of a hard material , perfectly straight and smooth . The hypothenuse of the right - angled triangle , which is length , and it is most convenient to ...
Page 23
... length into equal portions . If , for example , the line ab of a given length , say one inch , be divided into any number of equal parts , as 10 , the scale thus .1.2.3.4.5 .6 .7.8.9 10 a ab , which is divided ormed , is called a scale ...
... length into equal portions . If , for example , the line ab of a given length , say one inch , be divided into any number of equal parts , as 10 , the scale thus .1.2.3.4.5 .6 .7.8.9 10 a ab , which is divided ormed , is called a scale ...
Page 24
... length . On ab describe the square abcd . ab and de each into ten equal parts . Draw af and the other nine parallels as in the figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark ...
... length . On ab describe the square abcd . ab and de each into ten equal parts . Draw af and the other nine parallels as in the figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark ...
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