perform his work by the cutand try method, which belongs to the past. Our en-graving shows a square devised and made by Mr. D. H.Dugar, a mechanician of the Watertown Arsenal. Thissquare has a blade pivoted on a conical screw and ad-justed by two conical screws inserted in the heavy partof the… … AN ADJUSTABLE SQUARE. and unscrewing the other the blade may be adjusted asdesired, and when so adjusted it is securely clamped bythe pivotal screw. A NEW BALL BEARING INSPECTION CAB. At the recent roadmasters convention at NiagaraPalls the Railway Cycle Manufacturing Company, ofHagerstown, Ind.,…
Patents · Bicycle · Feet · Scientific American · Munn · Calcium tungstate · Ratchet wheel · Horse power · Gas engine · Years ago · Call box · Pivotally connected · Sewing machine · Postal union
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