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
... 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 Public Lands , 126 Variation of ...
... 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 Public Lands , 126 Variation of ...
Page 20
... use , their restriction , or their extension . 26. A hypothesis is a supposition , made either in the enun- Axioms . 1. Things which are equal to the same ciation of a proposition , or in the course of a demonstration . 20 INTRODUCTION .
... use , their restriction , or their extension . 26. A hypothesis is a supposition , made either in the enun- Axioms . 1. Things which are equal to the same ciation of a proposition , or in the course of a demonstration . 20 INTRODUCTION .
Page 93
... course ; and the angle which this line makes with the meri- dian passing through the point of beginning , is called the bearing . Thus , if we start from the point A , and measure in the direction AB , the line AB is the course , and ...
... course ; and the angle which this line makes with the meri- dian passing through the point of beginning , is called the bearing . Thus , if we start from the point A , and measure in the direction AB , the line AB is the course , and ...
Page 94
... course , like AF , falls between the south and east points , the bearing is read , south 70 ° cast , and is written , S 70 ° E. When the course , like AD , falls between the south and west points , the bearing is read , south 70 ° west ...
... course , like AF , falls between the south and east points , the bearing is read , south 70 ° cast , and is written , S 70 ° E. When the course , like AD , falls between the south and west points , the bearing is read , south 70 ° west ...
Page 97
... course AB , the northing is found to be HB , and the departure , which is west , is represented by AH . Of the course BC , the northing is expressed by BG , and the departure , which is east , by GC . Of the course CD , the southing is ...
... course AB , the northing is found to be HB , and the departure , which is west , is represented by AH . Of the course BC , the northing is expressed by BG , and the departure , which is east , by GC . Of the course CD , the southing is ...
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