Vintage 1920s Dahl MFG CO. NYC Interlocking Master Slide Ruler
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Description
Master Slide Ruler - Type of boxwood ruler, featuring the sliding extensions,The slides are linked by brass guides and spring clips that hold the ruler opened, or release the rule with a slight finger pressure on the top of the clip. The one is marked "MASTER SLIDE RULE INTERLOX DAHL MFG. CO. N.Y.C. MADE IN U.S.A." It is in great condition, and does slide open without any trouble; fully unhinged, it is 43" long , closed this item is 8" long.
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Vintage 1920s Dahl MFG CO. NYC Interlocking Master Slide Ruler
Estimate $35 - $100
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Item located in OLD TAPPAN, NJ, usOffers In-House Shipping
Local Pickup Available
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