Crocker's Elements of land surveying. To which are added, Tables of six-figure logarithms, superintended by R. Farley1841 |
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Side 183
... positions , and the angles of their inclination one to another . The Plane Table was formerly much em- ployed for this purpose , and some persons still continue to use it ; for which reason the description of this instrument , and some ...
... positions , and the angles of their inclination one to another . The Plane Table was formerly much em- ployed for this purpose , and some persons still continue to use it ; for which reason the description of this instrument , and some ...
Side 197
... position they stood in at A , only having been reversed , the readings are altered 180 ° . Clamp the limb , and turn the telescope to G. Write down the reading at nonius a , ( = 14 ° 13 ′ ) , which will now be found to differ 180 ° from ...
... position they stood in at A , only having been reversed , the readings are altered 180 ° . Clamp the limb , and turn the telescope to G. Write down the reading at nonius a , ( = 14 ° 13 ′ ) , which will now be found to differ 180 ° from ...
Side 198
... position of the figures in writing the station at the beginning of the line , as explained at page 225 . We next arrive at station G , where the bearings of both the lines , Nos . 3 and 4. , may be taken without removing the instrument ...
... position of the figures in writing the station at the beginning of the line , as explained at page 225 . We next arrive at station G , where the bearings of both the lines , Nos . 3 and 4. , may be taken without removing the instrument ...
Side 199
... positions of all of them being sufficiently fixed by points that have been already de- termined . The external lines , from No. 18. to No. 25. , may also be laid down without the assistance of angles , yet somewhat uncertainly , both ...
... positions of all of them being sufficiently fixed by points that have been already de- termined . The external lines , from No. 18. to No. 25. , may also be laid down without the assistance of angles , yet somewhat uncertainly , both ...
Side 204
... position of your principal figure , whether triangle or trapezium , that it may be so constructed as to comprehend as much as possible of the lands to be surveyed , without extending very far beyond them . Great care is required in ...
... position of your principal figure , whether triangle or trapezium , that it may be so constructed as to comprehend as much as possible of the lands to be surveyed , without extending very far beyond them . Great care is required in ...
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Crocker's Elements of Land Surveying. to Which Are Added, Tables of Six ... Abraham Crocker,Richard Farley Ingen forhåndsvisning tilgjengelig - 2023 |
Crocker's Elements of Land Surveying. to Which Are Added, Tables of Six ... Abraham Crocker,Richard Farley Ingen forhåndsvisning tilgjengelig - 2018 |
Crocker's Elements of Land Surveying. to Which Are Added, Tables of Six ... Abraham Crocker,Richard Farley Ingen forhåndsvisning tilgjengelig - 2023 |
Vanlige uttrykk og setninger
30 Cosine acres angular point Ansr base Bisect called centre chain circle circumference Co-s construction Cotang decimal describe the arc diagonal diameter Diff distance divided draw the line ellipse equilateral triangle EUCLID Examples for Practice Extend the compasses extent fence field field-book figure find the Area find the side geometrical given angle given line Gunter's scale half sum hypothenuse inches inscribed instrument Land-measuring length line drawn logarithm measured method Multiply natural number NATURAL SINES nonagon number of degrees parallel line parallel ruler parallelogram perches perpendicular polygon PROBLEM proportion protractor quantity radius regular polygon Required the area rhomboides rhombus right angles right line roods RULE scale of chords scale of equal scalenous triangle segment sextant side AC square links station subtracted Suppose tabular difference Tangent telescope theodolite transverse trapezium trapezoid triangle ABC Trigonometry vulgar fraction ΙΟ
Populære avsnitt
Side i - CROCKER'S ELEMENTS OF LAND SURVEYING. Fifth Edition, corrected throughout, and considerably improved and modernized, by TG BUNT, Land Surveyor, Bristol. To which are added, TABLES OF SIX-FIGURE LOGARITHMS, &c., superintended by RICHARD FARLEY, of the Nautical Almanac Establishment.
Side 4 - ... one less than the number of figures in the integral part of the natural number. The decimal part...
Side 8 - The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Side 123 - Or, from 8 times the chord of half the arc, subtract the chord of the whole arc, and $ of the remainder will be the length of the arc, nearly.
Side 61 - If a side be required, say, — As the sine of the given angle is to its opposite side, So is the sine of either of the other angles to its opposite side.
Side 272 - Two or more places are on a true level, when they are equally distant from the centre of the earth. Also, one place is higher than another, or...
Side 131 - This figure being a mean proportional between its circumscribed and inscribed circles, that is, equal to a circle whose diameter is a mean proportional between the axes of the ellipse, we...
Side 103 - From half the sum of the three sides subtract each side severally. Multiply the half sum and the three remainders...
Side 40 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Side 122 - To find the area of a sector of a circle. RULE I. — Multiply the radius by half the arc of the sector for the area.