Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 28
... feet , to a scale of twenty feet to the inch . Take one inch from the scale of inches : then place one foot of the dividers at the twentieth division , and open the sector until the dividers will just reach the twentieth division on the ...
... feet , to a scale of twenty feet to the inch . Take one inch from the scale of inches : then place one foot of the dividers at the twentieth division , and open the sector until the dividers will just reach the twentieth division on the ...
Page 30
... feet in length , and it were required to draw it on paper , on a scale of 25 feet to The length of the line 75 feet , being divided the inch . 30 INTRODUCTION .
... feet in length , and it were required to draw it on paper , on a scale of 25 feet to The length of the line 75 feet , being divided the inch . 30 INTRODUCTION .
Page 31
... feet drawn to the required scale . REMARK I. This problem explains the manner of laying down a line upon paper , in ... feet in length is to be laid down on paper , on a scale of 40 feet to the inch ; what length must be taken from the ...
... feet drawn to the required scale . REMARK I. This problem explains the manner of laying down a line upon paper , in ... feet in length is to be laid down on paper , on a scale of 40 feet to the inch ; what length must be taken from the ...
Page 32
... feet to the inch : then , 3.55 X 40 142 feet , the length of the line . PROBLEM VIII . Having given two sides and the included angle of a triangle , to describe the triangle . 34. Let the line B - 150 feet , and C = 120 feet , be the ...
... feet to the inch : then , 3.55 X 40 142 feet , the length of the line . PROBLEM VIII . Having given two sides and the included angle of a triangle , to describe the triangle . 34. Let the line B - 150 feet , and C = 120 feet , be the ...
Page 53
... feet in length ; it is called Gunter's chain , from the name of the inventor . This chain is composed of 100 links . Every tenth link from either end , is marked by a small attached brass plate , which is notched , to designate its num ...
... feet in length ; it is called Gunter's chain , from the name of the inventor . This chain is composed of 100 links . Every tenth link from either end , is marked by a small attached brass plate , which is notched , to designate its num ...
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