Practical Geodesy: Comprising Chain Surveying, and the Use of Surveying Instruments; Levelling, and Tracing of Contours; Together with Trigonometrical Colonial Mining and Maritime SurveyingJ. W. Parker and son, 1855 - 272 pàgines |
Altres edicions - Mostra-ho tot
Practical Geodesy: Comprising Chain Surveying, and the Use of Surveying ... J. Butler Williams Previsualització no disponible - 2018 |
Practical Geodesy: Comprising Chain Surveying, and the Use of Surveying ... J. Butler Williams Previsualització no disponible - 2015 |
Frases i termes més freqüents
accuracy adjustment adopted altitude angle of elevation angular distance appear artificial horizon ascer ascertained axis boundary Butser Hill centre chain circle clamped column contained arc contour lines correction cross wires curve depression described determined difference direction drawn equal feet field-book fixed fore sight given glass ground height hills horizontal lines inch inclosure index error instrument intersection Kit Hill latitude length limb line of collimation longitude marked means measured meridian method mile Nautical Almanac normal contours object observed obtained Octavo operations parallax parallel parish pickets placed plotting pole pole star position protractor purpose quantity reading reduced reference refraction rhombus right angles road scale screws sextant shade sides signals spirit-level staff staff-holder star station line staves straight line surveyor taken tangent telescope theodolite tion traced triangles Trigonometrical Survey tripod vane vernier Vernier Scale vertical arc zenith
Passatges populars
Pàgina 10 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.
Pàgina 212 - ... to make the objects appear on the other wire ; if the contact still remains perfect, the axis of the telescope is in proper adjustment ; if not, it must be altered by moving the two screws which fasten, to the up-and-down piece, the collar into which the telescope screws. This adjustment is not very liable to be deranged.
Pàgina 273 - Varronianus; a Critical and Historical Introduction to the Ethnography of Ancient Italy, and the Philological Study of the Latin Language. By JW DONALDSON, DD, Head Master of Bury School.