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 Engineer |
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Página 24
Set the instrument firmly , cast loose the wyes , and , by levelling and tangent screws , bring either of the cross - hairs to coincide with a well - defined object , distant from 400 to 600 feet , or as much farther as distinct vision ...
Set the instrument firmly , cast loose the wyes , and , by levelling and tangent screws , bring either of the cross - hairs to coincide with a well - defined object , distant from 400 to 600 feet , or as much farther as distinct vision ...
Página 25
It may be removed by manipulation of the small screws securing the inner end of the eye - piece . TO BRING THE LEVEL BUBBLE PARALLEL WITH THE TELESCOPE AXIS . 5. Clamp the instrument over either pair of levelling screws , and bring the ...
It may be removed by manipulation of the small screws securing the inner end of the eye - piece . TO BRING THE LEVEL BUBBLE PARALLEL WITH THE TELESCOPE AXIS . 5. Clamp the instrument over either pair of levelling screws , and bring the ...
Página 40
Bring the bubbles to the middle of them by means of the levelling screws . Turn the top of the instrument horizontally half way round . If the bubbles then err , reduce the error onehalf with the small adjusting screws attached to the ...
Bring the bubbles to the middle of them by means of the levelling screws . Turn the top of the instrument horizontally half way round . If the bubbles then err , reduce the error onehalf with the small adjusting screws attached to the ...
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Contenido
LOGARITHMS | 3 |
PLANE TRIGONOMETRY | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 23 |
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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 - 2017 |
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2018 |
Términos y frases comunes
4º curve added adjustment angle base called central angle centre chord circle cloth column connecting corresponding Cosine Cotang Cubes decimals deflection degree of curvature determine difference direct distance divided Draw elevation engineer equal equivalent error Example feet feet long field figure fixed follows frog gauge given gives grade ground half Hence Illustrated inches length logarithm mark means measure method middle minutes Move multiplied natural necessary Note observation opposite ordinate parallel practice quotient radii radius rail range Roots rule screws side Sine slope Square stake straight stretch Suppose switch-rail Table Table XVI Tang tangent telescope terminal tion track transit triangle turn vernier vertical whole
Información bibliográfica
| Título | 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 Engineer |
| Autor | William Findlay Shunk |
| Edición | 2 |
| Editor | D. Van Nostrand, 1882 |
| Procedencia del original | Universidad de California |
| Digitalizado | 7 Dic. 2007 |
| Largo | 325 páginas |
| Exportar cita | BiBTeX EndNote RefMan |