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Mathematical Instruments: Their Construction, Adjustment, Testing ..., Том 1
John Fry Heather
Попередній перегляд недоступний - 2015
accuracy adjustment altitude angles atmosphere attached axis azimuth barometer bearings body bubble called carries centre circle cloth coincidence collimation column compass construction correction cross wires Crown 8vo declination described determined difference direct distance divided division east Edition Electrical Engineering equal error exactly fall feet figure fixed formula give given glass graduated greater half height horizontal hour Illustrations inches indicated instrument interval length limb lower marked means measured ment mercury meridian method motion moved nearly object observed obtained operation parallel passing perfect plane plate plot polar pole position Practical reading reflected represents result right angles rise round scale screw seen side staff star station surface survey taken taking telescope temperature theodolite tion transit tube turning vernier vertical wind zero
Сторінка 155 - RIVER BARS. The Causes of their Formation, and their Treatment by " Induced Tidal Scour " ; with a Description of the Successful Reduction by this Method of the Bar at Dublin. By IJ MANN, Assist. Eng. to the Dublin Port and Docks Board. Royal 8vo, cloth 7;6 " We recommend all interested in harbour works — and.
Сторінка 149 - IRON AND STEEL. A work for the Forge, Foundry, Factory, and Office. Containing ready, useful, and trustworthy Information for Ironmasters and their Stock•takers ; Managers of Bar, Rail, Plate, and Sheet Rolling Mills ; Iron and Metal Founders ; Iron Ship and Bridge Builders; Mechanical, Mining, and Consulting Engineers; Architects, Contractors, Builders, &c. By CHARLES HOARE, Author of " The Slide Rule,
Сторінка 149 - ELECTRICAL AND MAGNETIC CALCULATIONS. For the use of Electrical Engineers and Artisans, Teachers, Students, and all others interested in the Theory and Application of Electricity and Magnetism. By AA ATKINSON, MS, Professor of Physics and Electricity in Ohio University, Athens, Ohio.
Сторінка 161 - LIST OF CONTENTS. I. Historical Sketch of some of the means that have been adopted for the Supply of Water to Cities and Towns. — II. Water and the Foreign Matter usually associated with it— III. Rainfall and Evaporation.— IV. Springs and the waterbearing formations of various districts.
Сторінка 149 - Penny to 205. each, or per cwt., and £20 per ton, of any number of articles consecutively, from I to 470. Any number of cwts., qrs., and Ibs., from I cwt. to 470 cwts. Any number of tons, cwts., qrs., and Ibs., from i to 1,000 tons. By WILLIAM CHADWICK, Public Accountant. Fourth Edition, Revised and Improved. 8vo, strongly bound 18/" It is as easy of reference for any answer or any number of answers as a dictionary.
Сторінка 161 - Distribution of Water.— XIV. Meters, Service Pipes, and House Fittings.— XV. The Law and Economy of Water Works. — XVI. Constant and Intermittent Supply. —XVII. Description of Plates.— Appendices, giving Tables of Rates of Supply, Velocities, &c. &c. , together with Specifications of several Works illustrated, among which will be found : — Aberdeen, Bideford, Canterbury, Dundee, Halifax, Lambeth, Rotherham, Dublin, and others. " The most systematic and valuable work upon water supply...
Сторінка 149 - IRON-PLATE WEIGHT TABLES. For Iron Shipbuilders, Engineers, and Iron Merchants. Containing the Calculated Weights of upwards of 150,000 different sizes of Iron Plates from i foot by 6 in. by J in. to 10 feet by 5 feet by i in. Worked out on the Basis of 40 Ibs. to the square foot of Iron of i inch in thickness. By H. BURLINSON and WH SIMPSON. 410, half-bound £1 6s.
Сторінка 159 - Survey Practice. AID TO SURVEY PRACTICE, for Reference in Surveying, Levelling, and Setting-out ; and in Route Surveys of Travellers by Land and Sea. With Tables, Illustrations, and Records. By Lowis D'A. JACKSON, AMICE, Author of " Hydraulic Manual,"
Сторінка 149 - Rates, from id. to i68s. per cwt., and containing 186,000 Direct Answers, which, with their Combinations, consisting of a single addition (mostly to be performed at sight), will afford an aggregate of 10,266,000 Answers ; the whole being calculated and designed to ensure correctness and promote despatch.