Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
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Page 25
... a point of division farther to the left . When units , tenths , and hundredths , are required , place one foot of the dividers where the vertical line through the point which designates the units , intersects the line which desig- nates ...
... a point of division farther to the left . When units , tenths , and hundredths , are required , place one foot of the dividers where the vertical line through the point which designates the units , intersects the line which desig- nates ...
Page 26
With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines Charles ... given point of a line , with the scale of chords , an angle equal to a given angle . Let AB be the line , and A the ...
With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines Charles ... given point of a line , with the scale of chords , an angle equal to a given angle . Let AB be the line , and A the ...
Page 27
... a Protractor . Place the diameter AB on the line , so that the centre shall fall on the angular point . Then count the degrees contained in the given angle from A towards B , or from B towards A and mark the extremity of the arc with a ...
... a Protractor . Place the diameter AB on the line , so that the centre shall fall on the angular point . Then count the degrees contained in the given angle from A towards B , or from B towards A and mark the extremity of the arc with a ...
Page 29
... a perpendicu lar to the line . 27. Let A be the given point , and BC the given line . From A lay off any two distances AB and AC equal to each other . Then , from the points B and C , as centres , with a radius greater than BA ...
... a perpendicu lar to the line . 27. Let A be the given point , and BC the given line . From A lay off any two distances AB and AC equal to each other . Then , from the points B and C , as centres , with a radius greater than BA ...
Page 30
... given angle , or a given arc , into two equal parts . 30. Let C be the given angle , and AEB the arc which measures ... point to draw a parallel to a given line . 31. Let A be the given point , and BC the given line . From A as a ...
... given angle , or a given arc , into two equal parts . 30. Let C be the given angle , and AEB the arc which measures ... point to draw a parallel to a given line . 31. Let A be the given point , and BC the given line . From A as a ...
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Common terms and phrases
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 DegDeg Distance 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 LatDegDeg LatDegDegDegDeg Distance latitude and departure length levelling screws line AC line of collimation logarithm marked measure multiplied natural sines paper parallel passing perpendicular plane of reference protractor radius right angles rods scale of equal secant side sights similar triangles Sine D Sine Sine spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards