A Treatise on Surveying: In which the Theory and Practice are Fully Explained. Preceded by a Short Treatise on Logarithms: and Also by a Compendious System of Plane Trigonometry. The Whole Illustrated by Numerous ExamplesE.C. & J. Biddle, 1865 - 428 sider |
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Side 13
... Sights ....... The Verniers ......... The Pivot ......... PAGE 163 164 166 166 168 168 169 169 The Divided Circle ........ ....................................................................................... Adjustments ..
... Sights ....... The Verniers ......... The Pivot ......... PAGE 163 164 166 166 168 168 169 169 The Divided Circle ........ ....................................................................................... Adjustments ..
Side 18
... divided by 2048. The indices or logarithms of these numbers are , respectively , 15 and 11. The difference of these logarithms is 4 , which is the logarithm of 16 , the quotient required . Hence the difference of the logarithms of two ...
... divided by 2048. The indices or logarithms of these numbers are , respectively , 15 and 11. The difference of these logarithms is 4 , which is the logarithm of 16 , the quotient required . Hence the difference of the logarithms of two ...
Side 45
... divided into 360 parts , called degrees , each degree into 60 parts , called minutes , and each minute into 60 seconds . Degrees are marked with a cipher over them , minutes with one accent ' , and seconds with two " . Thus , 37 degrees ...
... divided into 360 parts , called degrees , each degree into 60 parts , called minutes , and each minute into 60 seconds . Degrees are marked with a cipher over them , minutes with one accent ' , and seconds with two " . Thus , 37 degrees ...
Side 52
... divided into degrees . To use it , place it with the centre at the point at which the angle is to be made , and the straight edge coincident with the given line ; then with a fine point prick off the number of degrees required , and ...
... divided into degrees . To use it , place it with the centre at the point at which the angle is to be made , and the straight edge coincident with the given line ; then with a fine point prick off the number of degrees required , and ...
Side 54
... , or 66 feet , in length , and is divided into one hundred links , each of which is therefore .66 feet , or 7.92 inches in length . 125. Scales . Scales are generally made of ivory or 54 [ CHAP . III . PLANE TRIGONOMETRY .
... , or 66 feet , in length , and is divided into one hundred links , each of which is therefore .66 feet , or 7.92 inches in length . 125. Scales . Scales are generally made of ivory or 54 [ CHAP . III . PLANE TRIGONOMETRY .
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A Treatise on Surveying: In which the Theory and Practice are Fully ... Samuel Alsop Uten tilgangsbegrensning - 1857 |
A Treatise on Surveying: In Which the Theory and Practice Are Fully ... Samuel Alsop Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
ABCD acres adjacent angles adjacent sides bearings and distances calculate the area centre chains circle column compass correction Cosine Cotang decimal deflection determine Diff difference of latitude Dist divided division line double departure draw east equal error EXAMPLES field-notes figure given area given line given point Given the bearings horizontal hour angle inch instrument latitude and departure length line running logarithm mean proportional measured meridian method multiplier needle number of degrees offsets opposite parallel parallelogram perpendicular plat plate Polaris Problem protractor quotient radius ratio rectangle right angles right ascension rule scale sight sine square station straight line subtract survey surveyor Take the difference tance Tang tangent telescope theodolite tract of land transit trapezium triangle Trigonometry vernier whence
Populære avsnitt
Side 38 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 70 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Side 27 - Root of a Number, Divide the logarithm of the number by the index of the required root.
Side 33 - When one straight line meets another, so as to make two adjacent angles equal, each of these angles is called a right angle; and the first line is said to be perpendicular to the second.
Side 195 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Side 73 - ... will be — As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Side 37 - If two triangles have two sides and the included angle of one respectively equal to the sides and the included angle of the other, the triangles are congruent.
Side 126 - If two triangles have two angles, and the included side of the one equal to two angles and the included side of the other, they are equal in all their parts.
Side 39 - The angle at the centre of a circle is double the angle at the circumference on the same arc.
Side 39 - The square of the hypothenuse of a right angled triangle is equal to the sum of the squares of both the other sides.