Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 173
By means of the stem a the oil vessel can be placed upon any kind of foot. Besides the very un-equal, constantly decreasing height of the surface of the oil, another objection may be raised to thisarrangement, on account of the size and disadvantageous direction of the shadow, the conical…
Mechanical engineering
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