Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
From inside the book
Results 1-5 of 27
Page 17
... called points : a point , there- fore , has neither length , breadth , nor thickness , but position only . 3. A straight line is the shortest distance from one 2 * DEFINITIONS . 17 CHAPTER II Geometrical Definitions,
... called points : a point , there- fore , has neither length , breadth , nor thickness , but position only . 3. A straight line is the shortest distance from one 2 * DEFINITIONS . 17 CHAPTER II Geometrical Definitions,
Page 54
... position , a signal staff , having a small flag attached to its upper extremity ; and place another at the point where the measurement is to be terminated . These two points are generally called stations . Having passed the staves ...
... position , a signal staff , having a small flag attached to its upper extremity ; and place another at the point where the measurement is to be terminated . These two points are generally called stations . Having passed the staves ...
Page 57
... position ; and in both situations , the telescope can be revolved in the Y's about its axis . In the telescopes attached to the theodolite , are two prin- the eye is placed , is called the eyeglass , cipal lenses , one at each end . The ...
... position ; and in both situations , the telescope can be revolved in the Y's about its axis . In the telescopes attached to the theodolite , are two prin- the eye is placed , is called the eyeglass , cipal lenses , one at each end . The ...
Page 58
... position , if the horizontal hair appears above or below the point , and in either case , loosen one , and tighten the other , of the two screws that work the horizontal hair , till the horizontal hair has been carried over half the ...
... position , if the horizontal hair appears above or below the point , and in either case , loosen one , and tighten the other , of the two screws that work the horizontal hair , till the horizontal hair has been carried over half the ...
Page 59
... position . Reverse the tele- scope in the Y's , and make the same correction again ; and so on , until the bubble ... position of the telescope , when the telescope is reversed , the bubble would not stand in the middle of the tube ...
... position . Reverse the tele- scope in the Y's , and make the same correction again ; and so on , until the bubble ... position of the telescope , when the telescope is reversed , the bubble would not stand in the middle of the tube ...
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