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
... Calculation of Lines and Angles , 53 To Measure a Horizontal Line , 54 Of the Theodolite , 55 Heights and Distances , 66 Of Measurements with the Tape or Chain , 74 Surveying Cross , 76 CHAPTER III . Of the Content of Ground , Of Laying ...
... Calculation of Lines and Angles , 53 To Measure a Horizontal Line , 54 Of the Theodolite , 55 Heights and Distances , 66 Of Measurements with the Tape or Chain , 74 Surveying Cross , 76 CHAPTER III . Of the Content of Ground , Of Laying ...
Page 34
... calculation , the unknown parts of a triangle when a sufficient number of the six parts is given . It has already ... calculations , the cir- cumference of the circle is divided into 360 equal parts , called degrees ; each degree into 60 ...
... calculation , the unknown parts of a triangle when a sufficient number of the six parts is given . It has already ... calculations , the cir- cumference of the circle is divided into 360 equal parts , called degrees ; each degree into 60 ...
Page 37
... calculated to a radius of 10,000,000,000 . The logarithm of this radius is 10 . In the first and last horizontal lines of each page , are written the degrees whose sines , cosines , & c . are expressed on the page . The vertical columns ...
... calculated to a radius of 10,000,000,000 . The logarithm of this radius is 10 . In the first and last horizontal lines of each page , are written the degrees whose sines , cosines , & c . are expressed on the page . The vertical columns ...
Page 38
... calculated in the following manner . Opening the table at any page , as 42 , the sine of 24 ° is found to be 9.609313 ; that of 24 ° 01 ' , 9.609597 : their dif- ference is 284 ; this being divided by 60 , the number of seconds in a ...
... calculated in the following manner . Opening the table at any page , as 42 , the sine of 24 ° is found to be 9.609313 ; that of 24 ° 01 ' , 9.609597 : their dif- ference is 284 ; this being divided by 60 , the number of seconds in a ...
Page 53
... calculation . When , therefore , distances are to be found , by trigonomet- rical calculations , two things are necessary . 1st . To measure certain lines on the ground ; and also , as many angles as may be necessary to render at least ...
... calculation . When , therefore , distances are to be found , by trigonomet- rical calculations , two things are necessary . 1st . To measure certain lines on the ground ; and also , as many angles as may be necessary to render at least ...
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