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 20.
Σελίδα 41
... arch ( that is , any part of the circumference of a circle ) to the other , and is the measure of the arc . Thus the right line HG is the measure of the arc HBG , fig 8 . 18. The segment of a circle is any part thereof which is cut off ...
... arch ( that is , any part of the circumference of a circle ) to the other , and is the measure of the arc . Thus the right line HG is the measure of the arc HBG , fig 8 . 18. The segment of a circle is any part thereof which is cut off ...
Σελίδα 66
... arches and circles . If an arch or circle is to be described obscurely , the steel points are best adapted to the purpose ; if it is to be in ink or black lead , either the drawing pen , or crayon points are to be used . To use a pair ...
... arches and circles . If an arch or circle is to be described obscurely , the steel points are best adapted to the purpose ; if it is to be in ink or black lead , either the drawing pen , or crayon points are to be used . To use a pair ...
Σελίδα 67
... arches or circles , which they do much more conveniently than large com- passes , not only on account of their size , but also from the shape of the ... arch or circle is to be described of more than an inch radius DRAWING INSTRUMENTS . 67.
... arches or circles , which they do much more conveniently than large com- passes , not only on account of their size , but also from the shape of the ... arch or circle is to be described of more than an inch radius DRAWING INSTRUMENTS . 67.
Σελίδα 68
... arches they describe . In de- Sectors are made of different sizes , but their length is usually denominated from the length of the legs when the sector is shut . Thus a sector of six inches when the legs are close together forms a rule ...
... arches they describe . In de- Sectors are made of different sizes , but their length is usually denominated from the length of the legs when the sector is shut . Thus a sector of six inches when the legs are close together forms a rule ...
Σελίδα 71
... arch . 2. Make the same radius a trans- verse distance between 60 and 60 on the same line of chords .. 3. Take out the transverse distance of the given degrees , and lay this on the arch , which will mark out the angular distance ...
... arch . 2. Make the same radius a trans- verse distance between 60 and 60 on the same line of chords .. 3. Take out the transverse distance of the given degrees , and lay this on the arch , which will mark out the angular distance ...
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.