## Crocker's Elements of land surveying. To which are added, Tables of six-figure logarithms, superintended by R. Farley1841 |

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Crocker's Elements of Land Surveying. to Which Are Added, Tables of Six ... Abraham Crocker,Richard Farley No preview available - 2023 |

### Common terms and phrases

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

### Popular passages

Page 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.

Page 4 - ... one less than the number of figures in the integral part of the natural number. The decimal part...

Page 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)

Page 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.

Page 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.

Page 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...

Page 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...

Page 103 - From half the sum of the three sides subtract each side severally. Multiply the half sum and the three remainders...

Page 40 - Triangles upon equal bases, and between the same parallels, are equal to one another.

Page 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.