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 20
Page 54
... 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 through the rings of the chain , let the ten marking pins and one end ...
... 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 through the rings of the chain , let the ten marking pins and one end ...
Page 55
... upper side of the plate DE terminates in a curved 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 ...
... upper side of the plate DE terminates in a curved 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 ...
Page 56
... upper frame - work . The two spindles terminate at the base of the spherical ball , where a small screw enters the inner one , and presses a washer against the other , and the base of the ball . On the upper surface of the plate FG ...
... upper frame - work . The two spindles terminate at the base of the spherical ball , where a small screw enters the inner one , and presses a washer against the other , and the base of the ball . On the upper surface of the plate FG ...
Page 57
... upper telescope , with its attached level , rests on the vernier plate , to which it is made fast by three adjusting screws , placed at the angular points of an equilateral triangle . The vertical semicircle UV , is called the vertical ...
... upper telescope , with its attached level , rests on the vernier plate , to which it is made fast by three adjusting screws , placed at the angular points of an equilateral triangle . The vertical semicircle UV , is called the vertical ...
Page 58
... upper side . See , in this 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 ...
... upper side . See , in this 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 ...
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