Gurley Manual of Surveying Instruments ...W. & L. E. Gurley, 1908 - Surveying |
Contents
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Common terms and phrases
5-inch needle adjustment Alidade angles ball-spindle Bow-pen Bow-spacer Box of Leads Boxwood Scale bubble chain clamp and tangent clamp-screw clinometer compass-circle cost cross-wire Current-Meter diameter Drawing-Pen edge Engineers extension tripod extra eyepiece feet long fixed needle point folding sights foot furnished German silver glass graduated Hairspring Dividers half circle half degrees horizontal inches inches long inches wide instrument ivory handle latitude leather lengthening bar level on telescope level-vial leveling-head LEVELING-RODS leveling-screws mahogany main socket meridian metal Meter Morocco oval rings PARALLEL RULERS pen and pencil pencil points Plain Dividers Plane-Table plate plummet Pocket Railroad Compass points and lengthening POST PRICE Protractor reading shown side Solar Attachment Solar Compass spindle stadia wires staff mountings Steel Tape steel wire Steelspring surface Surveyors tangent movement tangent screw tangent to telescope tele telescope and clamp telescope axis Telescopic Sight TROY tube verniers to limb vertical arc vertical circle Y-Level zero
Popular passages
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Page 429 - Tables for Field Engineers. Designed for use in the field. Tables containing all the functions of a one degree curve, from which a corresponding one can be found for any required degree. Also, Tables of Natural Sines and Tangents.
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Page 434 - Diagrams. By Geo. W. Rafter. No. 104.— VAN NOSTRAND'S 'TABLE BOOK FOR CIVIL AND MECHANICAL ENGINEERS. Compiled by Prof. Geo. W. Plympton. No. 105.— DETERMINANTS. An Introduction to the Study of, with Examples and Applications. By Prof. GA Miller. No. 106.— COMPRESSED AIR. Experiments upon the Transmission of Power by Compressed Air in Paris. (Popp's System.) By Prof. ABW Kennedy. The Transmission...
Page 430 - Pocketbook. Of mensuration, trigonometry, surveying, hydraulics, hydrostatics, instruments and their adjustments, strength of materials, masonry, principles of wooden and iron roof and bridge trusses, stone bridges and culverts, trestles, pillars, suspension bridges, dams, railroads, turnouts, turning platforms, water stations, cost of earthwork, foundations, retaining walls, etc.
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Page 89 - ... all nations in computing the times of historical events, and in keeping dates. The year is either solar or civil. The solar year is the period of time in which the earth performs a revolution in its orbit about the sun, or passes from any point in the ecliptic to the same point again, and consists of three hundred and sixty-five days, five hours, forty-eight minutes, and forty-six seconds of mean solar time.
Page 65 - ... the solar lens, o, with the silver plate opposite, are made use of in the surveys. The remainder of the year, the arc is turned from the plates, and the other lens and plate employed. When the solar compass is accurately adjusted, and its plates made perfectly horizontal, the latitude of the place, and the declination of the sun for the given day and hour, being also set off on the respective arcs, the image of the sun cannot be brought between the equatorial lines until the polar axis is placed...
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