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 97
... chains , the perpendicular › Ans . BC 980 chains To find the angles and base . Given , < A 54 ° 51 ' < C 35 ° 09 ' AB 690 Ex . 6. In the right - angled triangle ABC , the base AB 735.9 links , the perpendicular BC 320 To find the angles ...
... chains , the perpendicular › Ans . BC 980 chains To find the angles and base . Given , < A 54 ° 51 ' < C 35 ° 09 ' AB 690 Ex . 6. In the right - angled triangle ABC , the base AB 735.9 links , the perpendicular BC 320 To find the angles ...
Σελίδα 109
... links of a four - pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are : two large rings . In such chains as have a OF THE CHAIN . 109 PART II ...
... links of a four - pole chain , there is a large ring , or sometimes a round piece of brass , fixed at every 10 links ; and at 50 links , or in the middle , there are : two large rings . In such chains as have a OF THE CHAIN . 109 PART II ...
Σελίδα 110
... links , there is the figure 1 on the first piece , 2 on the second , 3 on ... links thus , if he has the brass piece number 8 next to him , and six links more in a distance , that distance is 86 links ... chains 110 OF THE CHAIN . The Chain.
... links , there is the figure 1 on the first piece , 2 on the second , 3 on ... links thus , if he has the brass piece number 8 next to him , and six links more in a distance , that distance is 86 links ... chains 110 OF THE CHAIN . The Chain.
Σελίδα 111
... links be annexed , the distance line required in chains and links is obtained , which must be registered in the field - book , as will hereafter be shown . If the distance exceeds 10 , 20 , 30 , & c . chains , when the leader's pegs are ...
... links be annexed , the distance line required in chains and links is obtained , which must be registered in the field - book , as will hereafter be shown . If the distance exceeds 10 , 20 , 30 , & c . chains , when the leader's pegs are ...
Σελίδα 112
... chain cannot be car- ried horizontally , half a chain , or less , may , and the sum of these half - chains , or links , will give the base , as before . If the inclined side of the hill be the plane surface , the angle of the hill's ...
... chain cannot be car- ried horizontally , half a chain , or less , may , and the sum of these half - chains , or links , will give the base , as before . If the inclined side of the hill be the plane surface , the angle of the hill's ...
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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.