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 |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 31.
Σελίδα 6
... 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 calculating 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 calculating the ...
Σελίδα 124
... east into 90 , from the north to the west into 90 , from the south to the east into 90 , and from the south to the west into 90 degrees ; so the degrees are num- bered from the north to the east or west , and from the south to the east ...
... east into 90 , from the north to the west into 90 , from the south to the east into 90 , and from the south to the west into 90 degrees ; so the degrees are num- bered from the north to the east or west , and from the south to the east ...
Σελίδα 126
... east and west , or the situation of the land , is ob- tained . To take the bearing of each respective line from the meridian ; or to perform the office of the circumferentor , or quartered compass , by the the- odolite . Set your ...
... east and west , or the situation of the land , is ob- tained . To take the bearing of each respective line from the meridian ; or to perform the office of the circumferentor , or quartered compass , by the the- odolite . Set your ...
Σελίδα 132
... east , and W at the bottom of your paper for west . Then let the following field - book be that which is to be pro- tracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
... east , and W at the bottom of your paper for west . Then let the following field - book be that which is to be pro- tracted , the bearings being taken from the meridian , whether by a circumferentor , theodolite , or semicircle , and ...
Σελίδα 133
... east . Or , if the right - hand be made the north and the left the south , the west will be then up and the east down . In this case , if the degree be less than 180 , turn the arc of your protractor upwards , or towards the west ; and ...
... east . Or , if the right - hand be made the north and the left the south , the west will be then up and the east down . In this case , if the degree be less than 180 , turn the arc of your protractor upwards , or towards the west ; and ...
Άλλες εκδόσεις - Προβολή όλων
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.