The Field Engineer: A Handy Book of Practice in the Survey, Location, and Trackwork of Railroads; Containing ... Rules and Tables ... Applicable to ... the Standard and the Narrow Gauge ...D. van Nostrand, 1880 - 318 páginas |
Dentro del libro
Resultados 6-10 de 27
Página 17
... means of propositions 3 and 4 . Thus , take the given angle from 180 ° ; the remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of ...
... means of propositions 3 and 4 . Thus , take the given angle from 180 ° ; the remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of ...
Página 18
... means of the perpendicular from the vertical angle , the original triangle is divided into two , each of which falls under the first case . Or they may be solved by the simpler methods applica- ble to right - angled triangles . Second ...
... means of the perpendicular from the vertical angle , the original triangle is divided into two , each of which falls under the first case . Or they may be solved by the simpler methods applica- ble to right - angled triangles . Second ...
Página 23
... means of the small capstan head screws on the outside of the telescope - barrel , should be in the direction which would seem to increase the error requiring correction . 3. Before beginning the adjustments , screw the object - glass ...
... means of the small capstan head screws on the outside of the telescope - barrel , should be in the direction which would seem to increase the error requiring correction . 3. Before beginning the adjustments , screw the object - glass ...
Página 24
... means of the small capstan head screws at right angles to it on the telescope - barrel . Bring the spider - line again to coincide with the object by means of the levelling and tangent screws , and , if necessary , repeat the operation ...
... means of the small capstan head screws at right angles to it on the telescope - barrel . Bring the spider - line again to coincide with the object by means of the levelling and tangent screws , and , if necessary , repeat the operation ...
Página 25
... means of the small lateral capstan head screws at one end of the case . Return the telescope to its first position , level up again , and repeat the operation until the erroneous movement ceases . This adjustment brings the telescope ...
... means of the small lateral capstan head screws at one end of the case . Return the telescope to its first position , level up again , and repeat the operation until the erroneous movement ceases . This adjustment brings the telescope ...
Otras ediciones - Ver todas
The Field Engineer: A Handy Book of Practice in the Survey, Location and ... William F. Shunk Sin vista previa disponible - 2008 |
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2017 |
Términos y frases comunes
100 feet long 100-feet chords adjustment apex distance called central angle column Cosine 1 Sine Cotang cross-hair Cube Roots decimals deflection distance degree of curvature DEGREE OF CURVE Diff divided elevation engineer equal Example feet figure fixed foregoing frog angle Full Gauge gauge of track gauge side gent ground index angle instrument intersection angle length of switch-rail located logarithm M.
M. I Sine Main frog dist mantissa mark measure method middle frog middle ordinate middle point minutes Multiply observation outer rail parallel perpendicular quotient radii radius range Reciprocals REVERSED CURVE right triangle screws slope Square Roots standard gauge straight line sub-chord subtended Subtract Suppose Table XVI tabular tance Tang tangent A B tangential angle tangential distance telescope terminal tangent tion toe of switch Trigonometry turnout curve vernier versin vertical ΙΟ ΤΑΝ
Pasajes populares
Página 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Página 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 11 - ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Página 4 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers. log» MN = log» M + log