Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
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Results 6-10 of 39
Page 16
... figure from 9 till we reach the last significant figure , which must be taken from 10 : this will be the same as taking the logarithm from 10 . EXAMPLES . 1. From 3.274107 take 2.104729 . By common method . 3.274107 2.104729 Diff ...
... figure from 9 till we reach the last significant figure , which must be taken from 10 : this will be the same as taking the logarithm from 10 . EXAMPLES . 1. From 3.274107 take 2.104729 . By common method . 3.274107 2.104729 Diff ...
Page 19
... figure is a plane terminated on all sides by lines , either straight or curved . If the lines are straight , the space they en- close is called a rectilineal figure , or polygon , and the lines themselves , taken together , form the ...
... figure is a plane terminated on all sides by lines , either straight or curved . If the lines are straight , the space they en- close is called a rectilineal figure , or polygon , and the lines themselves , taken together , form the ...
Page 24
... figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark the point 1 , 2 , 3 , & c . Then , divide the line ad into ten equal parts , and through the points of division draw parallels ...
... figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark the point 1 , 2 , 3 , & c . Then , divide the line ad into ten equal parts , and through the points of division draw parallels ...
Page 25
... figure between a and b which designates the tenths . If two or more units are re- quired , the dividers must be placed on a point of division farther to the left . When units , tenths , and hundredths , are required , place one foot of ...
... figure between a and b which designates the tenths . If two or more units are re- quired , the dividers must be placed on a point of division farther to the left . When units , tenths , and hundredths , are required , place one foot of ...
Page 26
... figure , the chords are drawn for every ten degrees . The scale of chords being once constructed , the radius of the circle from which the chords were obtained , is known ; for , the chord marked 60 is always equal to the radius of the ...
... figure , the chords are drawn for every ten degrees . The scale of chords being once constructed , the radius of the circle from which the chords were obtained , is known ; for , the chord marked 60 is always equal to the radius of the ...
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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