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 |
Dentro del libro
Resultados 1-5 de 30
Página 20
... feet in a yard . 2.0625 12 = number of inches in a foot . .7500 12 number of lines in an inch . 9.0000 The answer here is 2 feet 9 lines . What is the value of .084 of a furlong ? 2 ft . 11 in . What is the value of .683 of a degree ...
... feet in a yard . 2.0625 12 = number of inches in a foot . .7500 12 number of lines in an inch . 9.0000 The answer here is 2 feet 9 lines . What is the value of .084 of a furlong ? 2 ft . 11 in . What is the value of .683 of a degree ...
Página 68
... feet long when opened to its greatest extent . scribing the lines usually placed on this instrument , I refer to those commonly laid down on the best six - inch brass sectors . But as the principles are the same in all , and the ...
... feet long when opened to its greatest extent . scribing the lines usually placed on this instrument , I refer to those commonly laid down on the best six - inch brass sectors . But as the principles are the same in all , and the ...
Página 73
... feet transversely to the scale concerned , and slide the feet along till they both rest on like divisions on both legs ; then will those divisions show the degrees and parts corresponding to the given line . To find the length of a ...
... feet transversely to the scale concerned , and slide the feet along till they both rest on like divisions on both legs ; then will those divisions show the degrees and parts corresponding to the given line . To find the length of a ...
Página 74
... feet , & c . , each part on the scale answering to one foot , one yard , & c . , and the plan will be larger or smaller as the scale contains a smaller or a greater number of parts in an inch . Hence a variety of scales is useful to lay ...
... feet , & c . , each part on the scale answering to one foot , one yard , & c . , and the plan will be larger or smaller as the scale contains a smaller or a greater number of parts in an inch . Hence a variety of scales is useful to lay ...
Página 75
... feet and inches , the first primary division is often duodecimally divided by the upper line ; there- fore , to lay down any number of feet and inches , as , for in- stance , 8 feet 8 inches , extend the compasses from 8 of the larger ...
... feet and inches , the first primary division is often duodecimally divided by the upper line ; there- fore , to lay down any number of feet and inches , as , for in- stance , 8 feet 8 inches , extend the compasses from 8 of the larger ...
Otras ediciones - Ver todas
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.