## A Treatise on Land Surveying in Theory and Practice ... |

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accuracy accurately adjusted already altitude angles angular points ascertained axis base line centre chain clamped computed considerable construction contained contour convenient correct corresponding curve described detail determined diagram difference direction distance district division drawn entered equal error examination extreme field field-book figure fixed follows formula forward give given graduated greater ground Hence horizontal inaccessible inclination intermediate points intersection known laid latter laying length less limb lower manner marked means measured ment mode object observed obtained operations parallel particular pass perpendicular placed plane plate plotted position practical primary reading reduced reference line reference point remote represent respective scale screw secondary seen selected sheet shown side staff stand station straight line sufficient suitable surface survey surveyor taken taking tangent telescope theodolite tion traced traverse triangles trig tube verified vernier vertical weight wire zero

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Page 291 - The term, however, when used to express the fineness of gold, has a relative meaning only. Every mass of alloyed gold is supposed to be divided into 24 equal parts ; thus the standard for coin is 22 carat fine, that is, it consists of 22 parts of pure gold and 2 parts of alloy.

Page 291 - Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30J square yards = 1 square rod 160 square rods = 1 acre 640 acres = 1 square mile Cubic Measure 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard 128 cubic feet...

Page 60 - 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 298 - Nesbit's Mensuration, and Key. A Treatise on Practical Mensuration : containing the most approved Methods of drawing Geometrical Figures; Mensuration of Superficies; Land Surveying; Mensuration of Solids ; the Use of the Carpenter's Rule ; Timber Measure, in which is shewn the method of Measuring and Valuing Standing Timber ; Artificers' Works, illustrated by the Dimensions and Contents of a House; a Dictionary of the Terms used in Architecture, &c.

Page 299 - The School-Books, Atlases, Maps, &c. comprised in this Catalogue may be inspected in the Educational Department of Messrs. LONGMANS and Co. 39 Paternoster How, London, where also all other works published by them may be seen.

Page 252 - ... rectilineal figures are to one another in the duplicate ratio of their homologous sides.

Page 303 - Stevens and Hole's Arithmetical Examination Cards, in Eight Sets, each Set consisting of Twenty-Four Cards. Price Is. per Set. A. Simple Addition and Subtraction. B. Simple Multiplication and Division. C. Compound Rules (Money>. D. Compound Rules (Weights and Measures). E. Practice and Bills of Parcels. F. Vulgar and Decimal Fractions. G. Simple and Compound Proportion.