Aid to Survey Practice for Reference in Surveying, Levelling, and Setting OutC. Lockwood and Company, 1880 - 382 pages |
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Results 6-10 of 61
Page 22
... difference , hence obtain 1 x 100 h ΙΟ But before thus obtaining this value , it must be made sure that the optical axis of the microscope and telescope are in the same vertical plane , or rather in parallel vertical planes , and ...
... difference , hence obtain 1 x 100 h ΙΟ But before thus obtaining this value , it must be made sure that the optical axis of the microscope and telescope are in the same vertical plane , or rather in parallel vertical planes , and ...
Page 23
... Difference Distance Difference Feet Altitudes Back sight Fore sight Re- duced Remarks Level + - + - The numerous advantages of such an instrument require little or SECT . II . INSTRUMENTS FOR MEASURING DISTANCE 23.
... Difference Distance Difference Feet Altitudes Back sight Fore sight Re- duced Remarks Level + - + - The numerous advantages of such an instrument require little or SECT . II . INSTRUMENTS FOR MEASURING DISTANCE 23.
Page 30
... difference of the two corresponding read- ings on the horizontal graduated limb , are two very simple operations best learnt by imitation . There are , however , two very common sources of error that require attention . Ist . Although ...
... difference of the two corresponding read- ings on the horizontal graduated limb , are two very simple operations best learnt by imitation . There are , however , two very common sources of error that require attention . Ist . Although ...
Page 37
... difference in elevation has so important an effect on errors of this class , the index error of the vertical arc , if there be any , should be remembered and occasionally tested by levelling the telescope . II . Repeating and Reflecting ...
... difference in elevation has so important an effect on errors of this class , the index error of the vertical arc , if there be any , should be remembered and occasionally tested by levelling the telescope . II . Repeating and Reflecting ...
Page 42
... differences of bearings as angles for the triangula- tion and detail of small surveys of any sort , requires no explanation . The forms of compass used are the pivoted needle , and the suspended needle ; the former being the most common ...
... differences of bearings as angles for the triangula- tion and detail of small surveys of any sort , requires no explanation . The forms of compass used are the pivoted needle , and the suspended needle ; the former being the most common ...
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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.