Motor Boating & Sailing 1918-11: Vol 22 Iss 4 (1918)
Bonnier Corporation · leaf 29
ck should ARBOR SHOULD 90° TOUCH BOTH OF THESE be secured to the bevel blocks and SURFACES arbor stops with countersunk-head wood screws. After the screws are ALL HARD WOOD— all driven the surface of the plate WELL SEASONED should be gone over with a file to remove any burrs or projecting screw… … B and line the other leg wall and a small piece of wood form- with C. Hold the legs of ing a handle is fastened to the other. the rule firmly, and carry To grind the valve it is then only necessary to pull on the string, slack it to the sheet of paper APPROXIMATING WIDTH OF A RIVER WITH off and let…
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