Hopkins, Henry, [from old catalog] comp · New York, H. Hopkins & co. · leaf 149
IMPROVED LABOR-SAVING Stanleys Patent Bit and Square Level. JUL … The frame of this Level has three pairs of V slots on its back edges A thumb-screwsecures the Level to the Bit; and boring can be done with perfect accuracy as to perpendic-ular, horizontal, or angle of forty-five degrees, by observing the bubble-glass while turningthe Bit. The frame can also be…
Metal-work · Hardware
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