LINING OUT A DOUBLE EYE. After measuring the dimensions of a double eje to ascer-tain if there is, upon the outline, surplus metal sufficientto permit of its clearing up all over, we apply an L squareupon the outside surfaces, and a T square, with the bladebetween the jaws, to test if the inside… … the case, the work is reasonably near to being true, we pro-ceed as follows: Placing the double eye upon the marking-oil table, as shown in Fig. 192, we block up the stem endwith the pieces of wood, B, so that the horizontal faces ofthe work will stand about true with the surface of the ta-ble, the…
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