Construction : a journal for the architectural engineering and contracting interests of Canada (1913)
Macdonald, Ivan S, McLean, Robert Craik, Reed, Frederick, Keith, Fraser Sanderson, 1878-, Toutloff, M. B · Toronto : Consolidated Press · leaf 75
n put together as well as seemedpossible at the time, contained tubes and bottles ofvarying diameter, and that some of the tubes werecurved in the vertical plane. Since a correction wasnecessary for each reading before the results werediagrammed, it was thought just as well to let theobservations… … The Pressure Indicator.On the sample records will be noticed a narrowhorizontal scale, above the tube scale, and in frontof this scale will be seen a small triangular pointer.This scale gives pressure in pounds per square footon a thin plate exposed at the end of the building.The pointer is earned…
Building · Architecture
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