Aid to Survey Practice for Reference in Surveying, Levelling, and Setting OutC. Lockwood and Company, 1880 - 382 pages |
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Page xiv
... difference of latitude The calculation of latitudes , longitudes , and azimuths Approximations for the same calculations . Properties of a spherical triangle · Fundamental formulæ of Spherical Trigonometry Napier's rules for circular ...
... difference of latitude The calculation of latitudes , longitudes , and azimuths Approximations for the same calculations . Properties of a spherical triangle · Fundamental formulæ of Spherical Trigonometry Napier's rules for circular ...
Page 9
... difference between which is a measure of the distance . By exact setting of the wires the ratio may be made convenient for a rapid calcula- tion of the required distance from the intercepted height , as , a chain to a foot , or 100 feet ...
... difference between which is a measure of the distance . By exact setting of the wires the ratio may be made convenient for a rapid calcula- tion of the required distance from the intercepted height , as , a chain to a foot , or 100 feet ...
Page 18
... difference of these two readings made with the help of a micrometer is the measure of the required distance . Thus if S the height observed on the staff , 18 CHAP . I. INSTRUMENTS AND CALCULATIONS Telemetrical observation on staves of ...
... difference of these two readings made with the help of a micrometer is the measure of the required distance . Thus if S the height observed on the staff , 18 CHAP . I. INSTRUMENTS AND CALCULATIONS Telemetrical observation on staves of ...
Page 19
... difference of readings on the scale , it is evident that the two triangles described through the motions of the telescopic and of the microscopic lines of sight are similar ; hence if the distance is required , Sh Ioh D = or generally ...
... difference of readings on the scale , it is evident that the two triangles described through the motions of the telescopic and of the microscopic lines of sight are similar ; hence if the distance is required , Sh Ioh D = or generally ...
Page 21
... difference of readings between that of the lower point and the point of departure = 160 005 , we obtain ID ___ 160 005 × 1247'92 S = h I 500 000 = = 133'115 feet . Should the reading for the lower point on the staff be less than that of ...
... difference of readings between that of the lower point and the point of departure = 160 005 , we obtain ID ___ 160 005 × 1247'92 S = h I 500 000 = = 133'115 feet . Should the reading for the lower point on the staff be less than that of ...
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Aid to Survey Practice for Reference in Surveying, Levelling, and Setting Out Lowis D'Aguilar Jackson No preview available - 2016 |
Common terms and phrases
Absc Abscissa accuracy adjustment adopted altitude amount angular measurement angular observation appliances astronomical observations axis azimuth base line bearings calculation centre chain surveys chord chronometer collimation compass convenient correct corresponding cosec cotg curvature curve determined difference direction distant point equal error feet figure fixed formulæ given graduated Greenwich mean ground Gunter's chains height hence horizontal angle inch instru instrument latitude length level-staff longitude lunar distance marked mean ment meridian method micrometer mile mode Nautical Almanac necessary object obtained operations Ordinate parallax pegs plane pole position principle purposes radii radius reading recorded reduced reflecting refraction right angles right ascensions route-surveys scale screws Section set-out setting-out sextant side sights sin² spherical spherical excess staff station staves subtended superelevation survey line surveyor tangent tangent point telemeter telescope theodolite tion transit traverse triangles Trigonometrical Trigonometrical Survey vertical wires
Popular passages
Page 21 - Those interested in the purchase and sale of estates, and in the adjustment of compensation cases, as well as in transactions in annuities, life insurances, &c., will find the present edition of eminent service.'* — Engineering.
Page 12 - A KEY AND COMPANION to the above Book, forming an extensive repository of Solved Examples and Problems in Illustration of the various Expedients necessary in Algebraical Operations.
Page 6 - Levelling. A TREATISE ON THE PRINCIPLES AND PRACTICE OF LEVELLING. Showing its Application to purposes of Railway and Civil Engineering, in the Construction of Roads; with Mr. TELFORD'S Rules for the same. By FREDERICK W. SIMMS, FGS, M. Inst. CE...
Page 15 - Edition, is. 49. Derivative Spelling-Book : Giving the Origin of Every Word from the Greek, Latin, Saxon, German, Teutonic, Dutch, French, Spanish, and other Languages ; with their present Acceptation and Pronunciation. By J. ROWBOTHAM, FRAS Improved Edition. is. 6d.
Page 9 - AN OUTLINE OF THE METHOD OF CONDUCTING A TRIGONOMETRICAL SURVEY. For the Formation of Geographical and Topographical Maps and Plans, Military Reconnaissance, LEVELLING, &c., with Useful Problems, Formulae, and Tables.
Page 16 - FRENCH. ~~ 24. French Grammar. With Complete and Concise Rules on the Genders of French Nouns. By GL STRAUSS, Ph.D. is 6d 25.
Page 16 - Spanish-English and English-Spanish Dictionary. Including a large number of Technical Terms used in Mining, Engineering, &c., with the proper Accents and the Gender of every Noun. By ALFRED ELWES.
Page 11 - Diagrams. i8mo, 2s. 6d. cloth. " As a really handy book for reference, we know of no work equal to it ; and the railway engineers and others employed in the measurement and calculation of earthwork will find a great amount of practical information very admirably arranged, and available for general or rough estimates, as well as for the more exact calculations required in the engineers
Page 7 - Professor Goodeve has given us a treatise on the steam engine, which will bear comparison with anything written by Huxley or Maxwell, and we can award it no higher praise.
Page 26 - Whether we consider the liberality and beauty of the illustrations, the charm of the writing, or the durable interest of the matter, we must express our belief that there is hardly to be found •among the new books one that would be welcomed by people of so many ages and classes as a valuable present."— Examiner.