The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads : Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge, and Prepared with Special Reference to the Wants of the Young EngineerVan Nostrand, 1882 - 6 páginas |
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Página x
... transit work ; or the reading of the rod to ascertain the instrument height in levelling . F. S. Foresight , in transit work ; or the reading of the rod to ascertain elevations in levelling . II . I. Height of instrument : elevation of ...
... transit work ; or the reading of the rod to ascertain the instrument height in levelling . F. S. Foresight , in transit work ; or the reading of the rod to ascertain elevations in levelling . II . I. Height of instrument : elevation of ...
Página 40
... TRANSIT . - 1. Should the vernier and circle plates be out of parallel , should one or the other be sprung , a defect shown by a slight rocking motion when the rims are pinched alternately on op- posite sides , the instrument must be ...
... TRANSIT . - 1. Should the vernier and circle plates be out of parallel , should one or the other be sprung , a defect shown by a slight rocking motion when the rims are pinched alternately on op- posite sides , the instrument must be ...
Página 42
... transit is a short graduated arc , movable around the graduated circle of the instrument , by means of which subdivisions of the circle graduation can be read . There are many varieties of the ver- nier ; but a knowledge of the ...
... transit is a short graduated arc , movable around the graduated circle of the instrument , by means of which subdivisions of the circle graduation can be read . There are many varieties of the ver- nier ; but a knowledge of the ...
Contenido
Definitions and principles | 3 |
Definitions | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 21 |
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Otras ediciones - Ver todas
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2015 |
The Field Engineer, a Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2016 |
Términos y frases comunes
100 feet long 100-feet chords called central angle chord 100 feet column cross-hair Cube Roots decimals deflection angle deflection distance degree of curvature degree of curve Diff divided elevation engineer equal Example feet 8 inches figure find the radius fixed foregoing frog angle Full Gauge gauge of track gauge side grade ground Hypsometry index angle instrument intersection angle length of switch-rail located logarithm magnetic bear Main frog dist main track mantissa mark measure method middle frog middle ordinate middle point minutes Multiply outer rail parallel perpendicular quotient radii radius REVERSED CURVE screws Sine 1 Cotang Square Roots stake standard gauge 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 ΙΟ ΤΑΝ