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 TablesHarper, 1832 - 348 páginas |
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Página 6
... pass through the east or west point of the survey , with the method of discovering these points from the field- notes , and the method of correcting the errors by the pen , when the survey does not close : also another new method for ...
... pass through the east or west point of the survey , with the method of discovering these points from the field- notes , and the method of correcting the errors by the pen , when the survey does not close : also another new method for ...
Página 9
... rea of a Survey , ge- ometrically consid- A 3 LIST OF TABLES . Logarithms of Numbers . Sines and Tangents . Traverse Table . Natural Sines . 1. Introductory Princi- ples 2. Description of Instru- ments 3. Variation of the Com- pass •
... rea of a Survey , ge- ometrically consid- A 3 LIST OF TABLES . Logarithms of Numbers . Sines and Tangents . Traverse Table . Natural Sines . 1. Introductory Princi- ples 2. Description of Instru- ments 3. Variation of the Com- pass •
Página 50
... pass through the centre , and consequently be a diameter . THEOREM IX . PL . 1. fig . 29 . If from the centre of a circle ABE there be drawn a perpendicular CD on the chord AB , and produced till it meets the circle in F , that line CF ...
... pass through the centre , and consequently be a diameter . THEOREM IX . PL . 1. fig . 29 . If from the centre of a circle ABE there be drawn a perpendicular CD on the chord AB , and produced till it meets the circle in F , that line CF ...
Página 62
... pass through the centre ; therefore their point of intersection H must be the centre . SCHOLIUM . By this method the centre of a circle may be found , by hav- ing only a segment of it given . PROBLEM XVI . PL . 3. fig . 4 . To make an ...
... pass through the centre ; therefore their point of intersection H must be the centre . SCHOLIUM . By this method the centre of a circle may be found , by hav- ing only a segment of it given . PROBLEM XVI . PL . 3. fig . 4 . To make an ...
Página 66
... passes are shut . As an instrument of art , compasses are so well known that it would be superfluous to enumerate their various uses ; suffice it then to say , that they are used to transfer small distances , measure given spaces , and ...
... passes are shut . As an instrument of art , compasses are so well known that it would be superfluous to enumerate their various uses ; suffice it then to say , that they are used to transfer small distances , measure given spaces , and ...
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Términos y frases comunes
ABCD acres altitude arch azimuth base bearing blank line centre chains and links circle circumferentor co-sine column compasses contained 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 method multiplied needle nonius number of degrees object observed offsets opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal SCHOLIUM screw secant sect sector semicircle side square root station stationary distance subtract suppose survey taken tangent theo theodolite THEOREM third trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Pasajes populares
Página 173 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
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 163 - RULE. From half the sum of the three sides subtract each side severally.
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 97 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 52 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Página 24 - The square of the sum of two numbers is equal to the square of the first number plus twice the product of the first and second number plus the square of the second number.
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.