. A manual of engineering specifications and contracts, designed as a text book and work reference for all who may be engaged in the theory or practice of engineering. Fronting Capitol Park, W^ASHINGTON, D. C. Prize Medal and Diploma awarded by the U. S. Centennial Commission iot excellencein design and construction of the Instruments exhibited. Illustrated Catalogue sent post-paid on HELLER & BRIGHTLY, Engineering and SurveyingInstruments, 33 North Seventh Street, Philadelphia. Without decreasing size of any part of our Engineers Transit, we have re-duced the weight one-lialf. A
. A manual of engineering specifications and contracts, designed as a text book and work reference for all who may be engaged in the theory or practice of engineering. Fronting Capitol Park, W^ASHINGTON, D. C. Prize Medal and Diploma awarded by the U. S. Centennial Commission iot excellencein design and construction of the Instruments exhibited. Illustrated Catalogue sent post-paid on HELLER & BRIGHTLY, Engineering and SurveyingInstruments, 33 North Seventh Street, Philadelphia. Without decreasing size of any part of our Engineers Transit, we have re-duced the weight one-lialf. An ordinary Transit Telescope magnifies from loto 12 diameieri, our new Transit Telescope (length lo^ inches, shows objectserect and not inverted; magnifies -8 diameters, and will read time on a watch-dial at 983 feet. For description of our new Mining Transit (weight 55^ lbs.)and Plummet Lamp see Van Nostrand s Engineering Magazine, June, 1873. Extract from report of Committee of Civ. Engs. appointed by Franklin Inst,to examine H. & B s new Transit [Dec. 1871I : It exhibits several noveltiesof construction which, in the opinion of the cummiltee, render it superior to thosenow in use, and in its opinion the deviations which they have made from thecommon styles of Transit are decided improvements. John C. Tkautwine, Chairman. We have also ately (Jan., 1878) placed, several other valua
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectenginee, bookyear1881
