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 TablesA. S. Barnes, 1839 - 412 páginas |
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Página 10
... Plane Table . 125 • · 128 ib . Mensuration of An- gles by these Instru- ments 131 PART III . 1. Introductory Princi- ples 2. Description of Instru- ments • 231 • • 235 243 • ... Of Distances 146 3. Mensuration of Areas 151 General ...
... Plane Table . 125 • · 128 ib . Mensuration of An- gles by these Instru- ments 131 PART III . 1. Introductory Princi- ples 2. Description of Instru- ments • 231 • • 235 243 • ... Of Distances 146 3. Mensuration of Areas 151 General ...
Página 11
... Plane Trigo- nometry . SECTION I. DECIMAL FRACTIONS . If we suppose unity or any one thing to be divided into any assigned number of equal parts , this number is called the de- nominator ; and if we choose to take any number 1 * Bect ...
... Plane Trigo- nometry . SECTION I. DECIMAL FRACTIONS . If we suppose unity or any one thing to be divided into any assigned number of equal parts , this number is called the de- nominator ; and if we choose to take any number 1 * Bect ...
Página 40
... PLANE GEOMETRY . DEFINITIONS . See PLATE I. 1. GEOMETRY is that science wherein we consider the prop- erties of magnitude . 2. A point is that which has no parts , being of itself indivisi- ble ; as A. 3. A line has length but no ...
... PLANE GEOMETRY . DEFINITIONS . See PLATE I. 1. GEOMETRY is that science wherein we consider the prop- erties of magnitude . 2. A point is that which has no parts , being of itself indivisi- ble ; as A. 3. A line has length but no ...
Página 64
... The smallest collection put into a case consists of a plane scale , a pair of compasses with a moveable leg , and compasses ; one of these points is to hold ink * wo spare points , which may be applied occasionally to the 64 MATHEMATICAL ...
... The smallest collection put into a case consists of a plane scale , a pair of compasses with a moveable leg , and compasses ; one of these points is to hold ink * wo spare points , which may be applied occasionally to the 64 MATHEMATICAL ...
Página 67
... plane on which they are used . The ink and crayon points have a joint just under that part which fits into the compasses ; by this they may be always so placed as to be set nearly perpendicular to the paper ; the end of the shank of the ...
... plane on which they are used . The ink and crayon points have a joint just under that part which fits into the compasses ; by this they may be always so placed as to be set nearly perpendicular to the paper ; the end of the shank of the ...
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Términos y frases comunes
ABCD acres altitude arch base bearing blank line centre chains and links circle circumferentor column compasses contained Cosine Sine 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 multiplied needle nonius number of degrees object observed opposite parallelogram perches perpendicular plane prob PROBLEM proportion protractor quadrant quotient radius rhombus right angles right line scale of equal screw secant sect sector semicircle side Sine Cotang square root station stationary distance subtract suppose survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane vulgar fraction whence
Pasajes populares
Página 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.
Página 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.
Página 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Página 45 - A lemma is something which is premised, or demonstrated, in order to render what follows more easy. A corollary is a consequent truth derived immediately from some preceding truth or demonstration.
Página 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.
Página 21 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.