Land Surveying and Levelling |
From inside the book
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... screws up inside the hollow case forming the body - piece of the plumb- bob . Sometimes a square distance plate equal in width to the diameter of the cylindrical case is added , which is useful when checking the perpendicularity of ...
... screws up inside the hollow case forming the body - piece of the plumb- bob . Sometimes a square distance plate equal in width to the diameter of the cylindrical case is added , which is useful when checking the perpendicularity of ...
Page 53
... screw with the aid of the magnifying eye - piece attached to the horizontal plate . Both plates thus clamped are revolved upon the vertical axis by turning the telescope with the hand until it comes as nearly as possible in the ...
... screw with the aid of the magnifying eye - piece attached to the horizontal plate . Both plates thus clamped are revolved upon the vertical axis by turning the telescope with the hand until it comes as nearly as possible in the ...
Page 72
... screw , and the angle A B C in fig . I is then read by means of the magnifying eyepiece attached to the vernier at G. To check the reading of the subdivisions upon the vernier at G , the vernier at H may be read . Next let the vernier ...
... screw , and the angle A B C in fig . I is then read by means of the magnifying eyepiece attached to the vernier at G. To check the reading of the subdivisions upon the vernier at G , the vernier at H may be read . Next let the vernier ...
Page 73
... screw to the vernier plate , and read the angle . Let us suppose that now the angle reads 196 ° 20 ' , it will be seen that , adding the value of a complete revolution , or 360 ° , to this reading , half this total amount would be 278 ...
... screw to the vernier plate , and read the angle . Let us suppose that now the angle reads 196 ° 20 ' , it will be seen that , adding the value of a complete revolution , or 360 ° , to this reading , half this total amount would be 278 ...
Page 74
... screw marked D. The complete circle is here graduated into degrees and half - degrees , the verniers read to minutes , and the circle is crossed by four radial bars having the metal removed in the centre . The folding arms and apparatus ...
... screw marked D. The complete circle is here graduated into degrees and half - degrees , the verniers read to minutes , and the circle is crossed by four radial bars having the metal removed in the centre . The folding arms and apparatus ...
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Common terms and phrases
accurately ANCLE application arrow authorised base line beam compasses Board of Trade book of reference boundary centre line chain chord circle clamped clerk column Committee contour copy cross curve datum line deposited diagram direction distance drawing drawn employed equal feet fence FICURE field field-book figures fixed ground Gunter's chain height horizontal House of Lords indicated instrument intended intersection Land Surveying length lessees Level Book level staff limits of deviation measured mile offsets Ordnance datum owners paper parish pencil petition plans and sections plotting plumb-bob pole position Private Bill Office proposed protractor provisional order radius railway right angles road scale screw set square sheet side square Standing Orders station straight edge surface Surveying and Levelling surveyor taken tangent line tangential angle tape telescope theodolite thereof tracing tracing paper tramway triangle vernier vernier scale vertical width
Popular passages
Page 271 - ... shall be deposited for public inspection at the office of the clerk of the peace for every county, riding, or division in England or Ireland, or in the office of the principal sheriff...
Page 280 - ... on the owners or reputed owners, lessees or reputed lessees, and occupiers of the said lands, and on the overseers of such parishes, and on the trustees, surveyors of highways, or other persons having the care of such roads or streets.
Page 248 - ... (no alternative line or work being in any case permitted), and the lands in or through which it is to be made, maintained, varied, extended or enlarged, or through which...
Page 84 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 256 - ... feet, an enlarged plan shall be added of any building, yard, courtyard, or land within the curtilage of any building, or of any ground cultivated as a garden...
Page 258 - All places where for a distance of thirty feet and upwards there will be a less space than nine feet six inches between the outside of the footpath on either side of the street or road and the nearest rail of the tramway...
Page 247 - Provided that where it is proposed to lay down a continuous line of Tramway in two or more districts, and any local or road authority having jurisdiction in any such districts does not consent thereto, the consents of the local and road authority, or the local and road authorities having jurisdiction over two-thirds in length of the streets and roads along which such proposed line of Tramway is proposed to be laid shall be deemed to be sufficient.
Page 263 - Act, 1845, shall not be more than One foot in 30 feet, and of any other public Carriage Road not more than One foot in 20 feet ; and that a good and sufficient Fence, of Four feet high at the least, shall be made on each side of every Bridge which shall be erected.
Page 275 - November a. copy of so much of the said plans and sections as relates to each parish in or through which the work is intended to be made, maintained, varied extended or enlarged, or in which any...
Page 284 - II of this schedule were deposited. (2) They are also to deposit a sufficient number of such printed copies at the office named in that behalf in the advertisement, such copies to be there furnished to all persons applying for them at the price of not more than each.