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 70
... distance . The divisions of each sectoral line are bounded by three parallel lines ; the innermost of these is that ... distance of 10 ; then the parallel distance of the other factor is the product . centre of the sector to 5 on the ...
... distance . The divisions of each sectoral line are bounded by three parallel lines ; the innermost of these is that ... distance of 10 ; then the parallel distance of the other factor is the product . centre of the sector to 5 on the ...
Página 71
... distance become the parallel distance from 10 to 10 on the same divisions ; then the parallel distance from 6 to 6 , extended from the centre of the sector , shall reach to 3 , which is now to be reckoned 30. At the same opening of the ...
... distance become the parallel distance from 10 to 10 on the same divisions ; then the parallel distance from 6 to 6 , extended from the centre of the sector , shall reach to 3 , which is now to be reckoned 30. At the same opening of the ...
Página 72
... distance of this or , and lay it off twice if the degrees were halved , three times if the third was used as a transverse distance . Case 3. When the required angle is less than 6 degrees ; suppose 3. 1. Open the sector to the given ...
... distance of this or , and lay it off twice if the degrees were halved , three times if the third was used as a transverse distance . Case 3. When the required angle is less than 6 degrees ; suppose 3. 1. Open the sector to the given ...
Página 73
... distance 10 a distance be- tween 8 on one leg and 6 on the other leg . On the sines , make the lateral distance 90 a transverse dis- tance from 45 to 45 ; or from 40 to 50 ; or from 30 to 60 ; or from the sine of any degrees to their ...
... distance 10 a distance be- tween 8 on one leg and 6 on the other leg . On the sines , make the lateral distance 90 a transverse dis- tance from 45 to 45 ; or from 40 to 50 ; or from 30 to 60 ; or from the sine of any degrees to their ...
Página 110
... distance , that distance is 86 links . After the same manner 10 may be counted for every large ring of a chain which has not brass pieces on it ; and the number of links is thus readily determined . The two - pole chain has a large ring ...
... distance , that distance is 86 links . After the same manner 10 may be counted for every large ring of a chain which has not brass pieces on it ; and the number of links is thus readily determined . The two - pole chain has a large ring ...
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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.