The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art. With a New Set of Accurate Mathematical TablesA. S. Barnes, 1839 - 412 páginas |
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Página 109
... four poles or perches , which con- sists of 100 links ( and this is the most natural division ) , or by one of 50 ... pole chain is 11 yards , and the four - pole one is 22 yards ; hence the length of a link in a statute - chain is 7.92 ...
... four poles or perches , which con- sists of 100 links ( and this is the most natural division ) , or by one of 50 ... pole chain is 11 yards , and the four - pole one is 22 yards ; hence the length of a link in a statute - chain is 7.92 ...
Página 113
... four - pole and others by a two - pole chain , and as ground for houses is measured by feet , we will show how to reduce one to the other in the following problems . PROBLEM I. To reduce two - pole chains and links to four - pole ones ...
... four - pole and others by a two - pole chain , and as ground for houses is measured by feet , we will show how to reduce one to the other in the following problems . PROBLEM I. To reduce two - pole chains and links to four - pole ones ...
Página 114
... four - pole chains and links . Thus : 2. In 17ch . 421. of two - pole chains how many four - pole Answer 8ch . 921 . ones ? PROBLEM II . To reduce four - pole chains and links to two - pole ones . Double the chains , to which annex the ...
... four - pole chains and links . Thus : 2. In 17ch . 421. of two - pole chains how many four - pole Answer 8ch . 921 . ones ? PROBLEM II . To reduce four - pole chains and links to two - pole ones . Double the chains , to which annex the ...
Página 115
... pole chains how many perches ! 2. 4 Answer , 31. 52 perches . PROBLEM V. To reduce perches and decimals of a perch to four - pole chains and links . Divide by 4 , so as to have two decimal places in the quo- tient , and that will be ...
... pole chains how many perches ! 2. 4 Answer , 31. 52 perches . PROBLEM V. To reduce perches and decimals of a perch to four - pole chains and links . Divide by 4 , so as to have two decimal places in the quo- tient , and that will be ...
Página 116
... pole chains , reduce them to four - pole ones ( by prob . 1 ) : these being multiplied by the feet in a four - pole chain will give the feet and decimals of a foot . Thus : In 17ch . 212. of two - pole chains how many feet ? ch . l . 8. 71 ...
... pole chains , reduce them to four - pole ones ( by prob . 1 ) : these being multiplied by the feet in a four - pole chain will give the feet and decimals of a foot . Thus : In 17ch . 212. of two - pole chains how many feet ? ch . l . 8. 71 ...
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Términos y frases comunes
ABCD acres altitude arch base bearing blank line centre chains and links circle circumferentor column compasses contained Cosine Sine cube root decimal diagonal diameter difference of latitude divided divisions divisor draw east ecliptic edge EXAMPLE feet field-book figure four-pole chains geometrical series given angle given number half the sum height Hence horizon glass hypothenuse inches instrument length logarithm manner measure meridian distance multiplied needle nonius number of degrees object observed opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal screw secant sect sector semicircle side Sine Cotang square root station stationary distance subtract suppose survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Pasajes populares
Página 49 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Página 41 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Página 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 45 - A lemma is something which is premised, or demonstrated, in order to render what follows more easy. A corollary is a consequent truth derived immediately from some preceding truth or demonstration.
Página 35 - DIVISION BY LOGARITHMS. RULE. From the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 21 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.