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 σελίδες |
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Σελίδα 6
... survey , by having the meridian 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 ...
... survey , by having the meridian 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 ...
Σελίδα 9
... 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 •
... 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 •
Σελίδα 11
... surveys ; and fourthly , to the calculation of its area , or superficial content . When this art is employed in determining the variation of the compass , in observing and delineating coasts and harbours , their latitude , longitude ...
... surveys ; and fourthly , to the calculation of its area , or superficial content . When this art is employed in determining the variation of the compass , in observing and delineating coasts and harbours , their latitude , longitude ...
Σελίδα 110
... surveys arise from bad chaining , that is , from straying out of the right line , as well as from other omissions of the ... survey , in a great measure , depends on his care and skill . In setting out to measure any stationary distance ...
... surveys arise from bad chaining , that is , from straying out of the right line , as well as from other omissions of the ... survey , in a great measure , depends on his care and skill . In setting out to measure any stationary distance ...
Σελίδα 113
... surveys are taken by a 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 ...
... surveys are taken by a 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 ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 173 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Σελίδα 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.
Σελίδα 163 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 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.
Σελίδα 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.
Σελίδα 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Σελίδα 52 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 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.
Σελίδα 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.