Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
From inside the book
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Page 31
... to find the true length of the line which it represents , take the line in the dividers and apply it unit to which it is equal . Then multiply this to the scale , and note the number of units , and parts of an SOLUTION OF PROBLEMS . 31.
... to find the true length of the line which it represents , take the line in the dividers and apply it unit to which it is equal . Then multiply this to the scale , and note the number of units , and parts of an SOLUTION OF PROBLEMS . 31.
Page 32
C. Davies. unit to which it is equal . Then multiply this number by the number of parts which the unit of the scale represents , and the product will be the length of the line . For example , suppose the length of a line drawn on the ...
C. Davies. unit to which it is equal . Then multiply this number by the number of parts which the unit of the scale represents , and the product will be the length of the line . For example , suppose the length of a line drawn on the ...
Page 38
... multiply the corresponding tabular number by the seconds , cut off two places to the right hand for decimals , and then add the pro- duct to the number first found , for the sine of the given arc . Thus , if we wish the sine of 40 ° 38 ...
... multiply the corresponding tabular number by the seconds , cut off two places to the right hand for decimals , and then add the pro- duct to the number first found , for the sine of the given arc . Thus , if we wish the sine of 40 ° 38 ...
Page 81
... multiplied by 4 , and five places of decimals pointed off from the right hand , the figures to the left will express the roods . If the decimal part of this result be now multiplied by 40 , and five places for decimals pointed off , as ...
... multiplied by 4 , and five places of decimals pointed off from the right hand , the figures to the left will express the roods . If the decimal part of this result be now multiplied by 40 , and five places for decimals pointed off , as ...
Page 82
... multiplied by links , the product is reduced to acres by pointing off five decimal places from the right hand . 2d . If chains be multiplied by links , the product is reduced to acres by pointing off three decimal places from the right ...
... multiplied by links , the product is reduced to acres by pointing off five decimal places from the right hand . 2d . If chains be multiplied by links , the product is reduced to acres by pointing off three decimal places from the right ...
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