Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Results 1-5 of 25
Page 8
... subtraction of logarithms corresponds to the di- vision of their numbers . 4. Let us examine further the equations 10 ° 1 101 = 10 102 = 100 103 = 1000 & c . & c . It is plain that the logarithm of 1 is 0 , and that the loga- rithms of ...
... subtraction of logarithms corresponds to the di- vision of their numbers . 4. Let us examine further the equations 10 ° 1 101 = 10 102 = 100 103 = 1000 & c . & c . It is plain that the logarithm of 1 is 0 , and that the loga- rithms of ...
Page 13
... subtract this less logarithm from the given logarithm , and having annexed any number of ciphers to the remainder , divide it by the dif- ference taken from the column D , and annex the quotient to the number answering to the less ...
... subtract this less logarithm from the given logarithm , and having annexed any number of ciphers to the remainder , divide it by the dif- ference taken from the column D , and annex the quotient to the number answering to the less ...
Page 15
... subtract the logarithm of the divisor , the remainder will be the logarithm of the quotient . This additional ... subtraction from the decimal part of the logarithm . Or , if the charac teristic of the logarithm of the dividend is ...
... subtract the logarithm of the divisor , the remainder will be the logarithm of the quotient . This additional ... subtraction from the decimal part of the logarithm . Or , if the charac teristic of the logarithm of the dividend is ...
Page 16
... subtracting the left hand figure from 9 , then proceeding to the right , subtract each figure from 9 till we reach the last significant figure , which must be taken from 10 : this will be the same as taking the logarithm from 10 ...
... subtracting the left hand figure from 9 , then proceeding to the right , subtract each figure from 9 till we reach the last significant figure , which must be taken from 10 : this will be the same as taking the logarithm from 10 ...
Page 17
... subtracting 10 , will be the logarithm of the quotient . EXAMPLES . 1. Divide 327.5 by 22.07 . log 327.5 log 22.07 Quotient • 2.515211 8.656198 • 1.171409 ar . comp . 14.839 2. Divide 0.7438 by 12.9476 . log 0.7438 log 12.9476 ar . comp ...
... subtracting 10 , will be the logarithm of the quotient . EXAMPLES . 1. Divide 327.5 by 22.07 . log 327.5 log 22.07 Quotient • 2.515211 8.656198 • 1.171409 ar . comp . 14.839 2. Divide 0.7438 by 12.9476 . log 0.7438 log 12.9476 ar . comp ...
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