d is contained in entific American upon this disagreeable task ; cer- the frame H. The small tainly every one who uses thorn knows full well the counter balances on the right truthfulness of our statement. The lamp herewith of the engraving are merely illustrated differs materially from others… … position indicated by the dotted lines, and will de- fluid in the chambers. necessary in its construction. In place thereof the The wheels h register the quantity of fluid passed tube, A, is formed with two spiral grooves, B, op- through the meter in a simple manner, by counting posite each other,…
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