View Larger Image   Master Slide Interlocking Rule Vacuum Oil Co. Rare!   Description: This is an interesting advertising rule, featuring the sliding extensions, instead of the more common zig zag folding type rulers. The one is marked "INTERLOCKING MASTER LOCK RULE N.Y.C. APPRD. MADE IN U.S.A. VACUUM OIL COMPANY GARGOYLE MARINE OILS ROCHESTER, N.Y. U.S.A.". There is a patent mark also, "PAT'D 12/13/1910 PAT'D 7/29/1913". It also has inside, and outside measurement sides of graduation. The side marked "INSIDE" is confusing to me, as it start at the left with a section graduated from 1-8" then the next section from the left is marked from 60" down to 9". On the side marked "OUTSIDE" the graduations are from the left 0-60". This rule is in good working condition, all the brass locks hold well, a few sections have some minor warping, and there is a few small areas chipped, but still strong, and very useable. A rare advertising rule!     Contact:   Great Expectations Antiques Seller:   Dealer/Mall    View Seller's Policy Seller Accepts:   We accept VISA, MASTER CARD, AMERICAN EXPRESS, PAYPAL, CASH, US POST OFFICE POSTAL MONEY ORDERS ONLY (ALL OTHER MONEY ORDERS WILL BE RETURNED), AND PERSONAL CHECKS. To order please click on the easy to use shopping cart. **INTERNATIONAL CUSTOMERS**PAYMENT BY CREDIT CARD PREFERRED** WE ONLY ACCEPT INTERNATIONAL POST OFFICE POSTAL MONEY ORDERS - PURCHASED AT YOUR GOVERNMENT POST OFFICE - IN US DOLLARS - ALL OTHER MONEY ORDERS WILL BE RETURNED. **ALL INTERNATIONAL CUSTOMS FEES, DUTIES, TAXES, BROKERAGE FEES ARE TO BE PAID BY THE BUYER**     Price:   $35.00  USD   Convert Currency Quantity Available:   1 Est. Shipping:   $6.00 USD Ship Internationally:   Yes   (Quoted at time of purchase) Shipping Paid By:   Buyer     Reference #:   T19245 Condition:   Good+ Circa:   early 1900's-1930's Maker:   INTERLOCKING MASTER LOCK RULE N.Y.C. Additional photos Demo version

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