Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 6
... Double Meridian Distances of the Courses , 102 Of the Area , 104 First Method of Plotting , 107 Second Method of Plotting , 107 Method of finding the Content of Land by means of the Table of Natural Sines , 120 Method of Surveying the ...
... Double Meridian Distances of the Courses , 102 Of the Area , 104 First Method of Plotting , 107 Second Method of Plotting , 107 Method of finding the Content of Land by means of the Table of Natural Sines , 120 Method of Surveying the ...
Page 21
... double of the same thing , are equal to each other . 7. Things which are halves of the same thing , are equal to each other . 8. The whole is greater than any of its parts . 9. The whole is equal to the sum of all its parts . 10. All ...
... double of the same thing , are equal to each other . 7. Things which are halves of the same thing , are equal to each other . 8. The whole is greater than any of its parts . 9. The whole is equal to the sum of all its parts . 10. All ...
Page 83
... double the area of the triangle . Find , from the table , the number answering to this logarithm , and divide it by 2 ; the quotient will be the required area ( Geom . Mens . Prob . II ) . 1. In a triangle ABC , suppose that we have ...
... double the area of the triangle . Find , from the table , the number answering to this logarithm , and divide it by 2 ; the quotient will be the required area ( Geom . Mens . Prob . II ) . 1. In a triangle ABC , suppose that we have ...
Page 101
... higher degree of accuracy than can be attained . The error , however , should always be made considerably less than one link to a chain . Of the double meridian distances of the courses . 141. 9 * WITH THE COMPASS . 101.
... higher degree of accuracy than can be attained . The error , however , should always be made considerably less than one link to a chain . Of the double meridian distances of the courses . 141. 9 * WITH THE COMPASS . 101.
Page 102
... double meridian distance of each course . For this purpose , a meridian line is assumed , lying either wholly ... double meridian dis- tances , the following RULE . I. The double meridian distance of the first course is equal to its ...
... double meridian distance of each course . For this purpose , a meridian line is assumed , lying either wholly ... double meridian dis- tances , the following RULE . I. The double meridian distance of the first course is equal to its ...
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