lly. This is usually done with a hardened steel and the notches in the frame effectually accomplish the engraving will be the lower side. The grate is rod while the stone is dry. This consumes a great the purpose for which they are designed. deal of power, and fills the air with a sharp dust: The… … TURNING THEM TRUE. sufficiently to allow the points half a mile in fifteen min- to enter the face of the stone. the wrench, D, by means of which the levers may be utes, with the same engine, to be placed on board of The engraving represents one of the washers re- a steamer. It would have taken 30…
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