Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 586
esurface-plate, shown in Fig. 3430, there are provided three small projecting lugs or feet T, at A, B,C, and upon these lugs the plate rests without rocking, even though the surface on which it standsbe an uneven one. Thus, whatever sag or deflection the plate may have will always be in the…
Mechanical engineering -- Dictionaries
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