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 páginas |
Otras ediciones - Ver todas
Practical Geodesy: Comprising Chain Surveying, and the Use of Surveying ... J. Butler Williams Sin vista previa disponible - 2018 |
Practical Geodesy: Comprising Chain Surveying, and the Use of Surveying ... J. Butler Williams Sin vista previa disponible - 2015 |
Términos y frases comunes
accuracy adjustment adopted altitude angle of elevation appear ascer ascertained axis boundary Butser Hill calculation centre chain circle clamped column construction contour lines correct cross wires depression described determined difference direction drawn earth equal extremities feet field field-book fixed fore sight given ground height hills horizontal lines inch inclination inclosure index error intersection J. W. DONALDSON Kit Hill length limb line of collimation longitude marked means measured meridian method mile Nautical Almanac normal contours objects observed obtained Octavo offsets operations parallax parallel parish pickets placed plotting pole pole star position protractor purpose quantity railway reading reduced reference refraction rhombus right angles road rods scale screws sextant shade sides signals spirit-level staff station line staves steep straight line surface surveyor taken telescope theodolite tion Tithe Commissioners traced triangles Trigonometrical Survey tripod vane vernier vertical arc zenith
Pasajes populares
Página 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.
Página 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.
Página 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.