## A Rudimentary Treatise on Land and Engineering Surveying: With All the Modern ImprovementsJ. Weale, 1850 - 218 pages |

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### Common terms and phrases

accuracy acres adjustment axis beam compasses bottom width breadth bubble centre centrifugal force chain lines corrected half width cross sections cubic yards cutting datum line depth difference of level direction divided draw embankment equal error EXAMPLE feet field book figure finding the contents fore sights formation level formula Gentleman's Diary given gradient ground height inches instrument intersection laid Lay the ruler length level book main lines mark measured mile move it parallel multiplied nearly NOTE offsets parallax parallel ruler perpendicular position Prob protractor radii radius railway curves Rankine's method right angles road scale screw shafts shewn shews sine spirit level square links staff stations straight fence surface survey surveyors Table taken taking tangent telescope theodolite Tithe Commissioners trapezium triangle tube tunnel vernier vernier scale vertical viaduct whence

### Popular passages

Page 3 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.

Page 104 - The hypotenuse is, therefore, equal to the square root of the sum of the squares of the other two sides...

Page 122 - An Act for consolidating in one Act certain provisions usually inserted in Acts of inclosure, and for facilitating the mode of proving the several facts usually required on the passing of such Acts...

Page 122 - An Act to facilitate the Inclosure and Improvement of Commons and Lands held in common, the Exchange of Lands, and the Division of intermixed Lands ; to provide Remedies for defective or incomplete Executions, and for the Non -execution of the Powers of general and local Inclosure Acts; and to provide for the Revival of such Powers in certain cases...

Page 90 - 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 i - Edition" or give the number in the Series (32) to distinguish it from the Enlarged Edition in 3 vols. (Nos. 168-9-70). 60. LAND AND ENGINEERING SURVEYING, a Treatise on; with all the Modern Improvements. Arranged for the Use of Schools and Private Students ; also for Practical Land Surveyors and Engineers. By ^T.

Page 122 - An Act to extend the powers and provisions of the several Acts relating to the inclosure of open and arable fields in England and Wales.

Page 8 - AE : that is, similar triangles are to one another iii the duplicate ratio of their homologous sides. (Euc. VI. 19.) THEOREM VIII. All similar figures are to one another as the squares of their homologous, or like, sides.

Page 124 - The two parallel plates are connected together by the ball and socket already mentioned, and are set firm by four mill-headed screws, which turn in sockets fixed to the lower plate, while their heads press against the under side of the upper plate, and thus serve the purpose of setting the instrument truly level.

Page 61 - ... themselves very small. We are not aware that a scale of this kind has been put upon the plain scales sold by any of the instrument makers ; but, during the time occupied in plotting an extensive survey, the paper which receives the work is affected by the changes which take place in the hygrometrical state of the air, and the parts laid down from the same scale, at different times, will not exactly correspond, unless this...