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 10
... Scale of Maps . 7. Method of dividing Land ... 208 213 8. Maritime Surveying . 220 9. Levelling .. 222 Ques- • 229 1. The Chain . . 109 The Circumferentor . 121 The Theodolite The Semicircle • The Plane Table . 125 • · 128 ib ...
... Scale of Maps . 7. Method of dividing Land ... 208 213 8. Maritime Surveying . 220 9. Levelling .. 222 Ques- • 229 1. The Chain . . 109 The Circumferentor . 121 The Theodolite The Semicircle • The Plane Table . 125 • · 128 ib ...
Página 12
... prefixing one , or two , or three ciphers to it and that any number of ciphers before an integer , or 7 3 SCALE OF NOTATION . Integers . Decimals . after a decimal fraction , has no effect in changing its value 12 DECIMAL FRACTIONS .
... prefixing one , or two , or three ciphers to it and that any number of ciphers before an integer , or 7 3 SCALE OF NOTATION . Integers . Decimals . after a decimal fraction , has no effect in changing its value 12 DECIMAL FRACTIONS .
Página 13
... SCALE OF NOTATION . Integers . Decimals . 8 7 5 326 - hundreds . ∞ tenth parts . hundredth parts . thousandth parts . ten thousandth parts . hundred thousandth parts . milliontn parts . ∞ tens . units . thousands . tens of thousands ...
... SCALE OF NOTATION . Integers . Decimals . 8 7 5 326 - hundreds . ∞ tenth parts . hundredth parts . thousandth parts . ten thousandth parts . hundred thousandth parts . milliontn parts . ∞ tens . units . thousands . tens of thousands ...
Página 53
... scale are formed is the chord of 60 degrees on the line of chords . THEOREM XVI . PL . 1. fig . 34 . If in two triangles , ABC , abc , all the angles of one be each respectively equal to all the angles of the other ; that is , Aa , B ...
... scale are formed is the chord of 60 degrees on the line of chords . THEOREM XVI . PL . 1. fig . 34 . If in two triangles , ABC , abc , all the angles of one be each respectively equal to all the angles of the other ; that is , Aa , B ...
Página 62
... scale of chords take 60 degrees , for 60 ° is equal to the radius ( by cor . theo . 15 ) , and with that distance from A as the quantity of the given angle , from the same a centre , describe a circle from the line AB ; take 45 degrees ...
... scale of chords take 60 degrees , for 60 ° is equal to the radius ( by cor . theo . 15 ) , and with that distance from A as the quantity of the given angle , from the same a centre , describe a circle from the line AB ; take 45 degrees ...
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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.