Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
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Page 10
... . log 672800 = 5.827886 the characteristic being 5 , since there are six places of figures . being multiplied by 87 , the figures regarded as ciphers The corresponding number , in the column D is 65 , which 10 INTRODUCTION .
... . log 672800 = 5.827886 the characteristic being 5 , since there are six places of figures . being multiplied by 87 , the figures regarded as ciphers The corresponding number , in the column D is 65 , which 10 INTRODUCTION .
Page 11
... multiplied by 87 , the figures regarded as ciphers , gives for a product 5655 ; then pointing off two decimal places , we obtain 56.55 for the number to be added . Hence Adding gives • • log 672800 5.827886 +56.55 log 672887 5.827943 ...
... multiplied by 87 , the figures regarded as ciphers , gives for a product 5655 ; then pointing off two decimal places , we obtain 56.55 for the number to be added . Hence Adding gives • • log 672800 5.827886 +56.55 log 672887 5.827943 ...
Page 14
... multiplied ; we next add these loga- rithms together , and their sum is the logarithm of the pro- duct of the numbers ( Art . 2 ) . The term sum is to be understood in its algebraic sense ; therefore , if any of the logarithms have ...
... multiplied ; we next add these loga- rithms together , and their sum is the logarithm of the pro- duct of the numbers ( Art . 2 ) . The term sum is to be understood in its algebraic sense ; therefore , if any of the logarithms have ...
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 three decimal places from the right hand . 3d . If chains be multiplied by chains , the product is reduced to acres by pointing off one decimal place from the ...
... multiplied by links , the product is reduced to acres by pointing off three decimal places from the right hand . 3d . If chains be multiplied by chains , the product is reduced to acres by pointing off one decimal place from the ...
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Common terms and phrases
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 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 hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection LatDegDegDegDeg Distance 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 plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side sights similar triangles Sine Sine spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards