Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 792
Fig. 3675 i- another form of hollow trilateral rail, slightly differing from the preceding. i cylindrical tube.i 8674 i- a taper tube, the interior and exterior being of uniform taper, and of equal thicknbout deriorly, and cylindrical interiorly, and 1 thickness tal Mandrils may bo employed or not…
Mechanical engineering
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