A Treatise of Practical Surveying: Which is Demonstrated from Its First Principles ...Lewis Nichols, 1806 - 452 páginas |
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Página 5
... land ; yet in a larger and more proper sense , it is applied to all sorts of dimensions . It is generally supposed to have had its rise among the Egyptians , from the river Nile's destroying and confounding all their land - marks by its ...
... land ; yet in a larger and more proper sense , it is applied to all sorts of dimensions . It is generally supposed to have had its rise among the Egyptians , from the river Nile's destroying and confounding all their land - marks by its ...
Página 7
... too long or too short : the method of dividing lands : And the whole concludes with some necessary di- rections and remarks on surveys in general . i THE PRINCIPLES OF SURVEYING . SECTION I. Containing Decimal PREFACE . vii.
... too long or too short : the method of dividing lands : And the whole concludes with some necessary di- rections and remarks on surveys in general . i THE PRINCIPLES OF SURVEYING . SECTION I. Containing Decimal PREFACE . vii.
Página 9
... land , and to determine the content thereof in such measure as is agreeable and cus- tomary to the country or place where the land is . This science depends on some parts of the ma- thematics , which must be known before we can treat of ...
... land , and to determine the content thereof in such measure as is agreeable and cus- tomary to the country or place where the land is . This science depends on some parts of the ma- thematics , which must be known before we can treat of ...
Página 137
... , which is 6 yards ; that of church - land measure , which is 7 yards ( or the same with the plantation perch ) and the forest measure perch which is 8 yards . S The Irish or plantation perch , is 7 yards , SECTION III. ...
... , which is 6 yards ; that of church - land measure , which is 7 yards ( or the same with the plantation perch ) and the forest measure perch which is 8 yards . S The Irish or plantation perch , is 7 yards , SECTION III. ...
Página 138
... land , their perch is 183 feet , and this perch is used in some few places in the north part of this king- dom , as the statute perch is in some other parts . For the more ready reckoning the links of a four - pole chain , there is a ...
... land , their perch is 183 feet , and this perch is used in some few places in the north part of this king- dom , as the statute perch is in some other parts . For the more ready reckoning the links of a four - pole chain , there is a ...
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Términos y frases comunes
40 perches ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-sine Co-tang Tang column contained cyphers decimal decimal fraction diameter difference distance line divided divisor draw drawn east edge EXAMPLE feet field-book figures fore four-pole chains half the sum height hypothenuse inches instrument Lat Dep Lat latitude line of numbers logarithm measure meridian distance multiplied needle number of degrees off-sets parallel parallelogram perpendicular piece of ground plane Plate prob PROBLEM proportion protractor quotient radius right angles right line scale of equal SCHOLIUM Secant second station sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance tangent thence theo theodolite THEOREM trapezium triangle ABC trigonometry true amplitude two-pole chains vane variation whence
Pasajes populares
Página 25 - 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.
Página 207 - ... that triangles on the same base and between the same parallels are equal...
Página 40 - 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.
Página 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Página 103 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 31 - Figures which consist of more than four sides are called polygons ; if the sides are all equal to each other, they are called regular polygons. They sometimes are named from the number of. their sides, as a five-sided figure is called a pentagon, one of six sides a hexagon, &"c.
Página 31 - ... they are called regular polygons. They sometimes are named from the number of their sides, as a five-sided figure is called a pentagon, one of. six sides a hexagon, &c. but if their sides are not equal to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c.
Página 45 - The hypothenuse of a right-angled triangle may be found by having the other two sides ; thus, the square root of the sum of the squares of the base and perpendicular, will be the hypothenuse. Cor. 2. Having the hypothenuse and one side given to find the other; the square root of the difference of the squares of the hypothenuse and given side will be the required side.
Página 265 - As the length of the whole line, Is to 57.3 Degrees,* So is the said distance, To the difference of Variation required. EXAMPLE. Suppose it be required to run a line which some years ago bore N. 45°.
Página 32 - Things that are equal to one and the same thing are equal to one another." " If equals be added to equals, the wholes are equal." " If equals be taken from equals, the remainders are equal.