19th Century 24 Inch Double Fold Bone RulerI'm always on the hunt for an antique bone ruler, but rarely do I find one in good condition that doesn't cost a fortune even rarer that I come across one that folds out to two feet. I found a mark on it reading "No 60" but no makers name. A lovely thing, and quite usable still, with the numbers and 16th of an inch marks on the interior side all still entirely clear and dark. 24 inches long; folded 6 3 8" x 1" x 3 8". Very good condition, with all