Measuring device

Item appears similar to a watch, slightly smaller than a men's pocket watch and larger than a woman's lapel watch.  Item has circular face with fob ring at top and wheel for measuring distance at bottom.  Face has one row of 12 numbers with gradations positioned like a clock's, which indicate inches.  Inside that row is another, one through 25, which indicate feet.  Hands similar to a clock's indicate feet and inches, the large hand inches and the smaller feet. The plating, which appears to be silver, is worn in spots, exposing what appears to be brass.  The measuring wheel moves freely and accurately.