A nice antique wood sliding ruler by Interlox Master Rule Mfg Co., NYC. A 72" Long wood ruler that has a nice sliding mechanism rather than folding. An early model, circa 1918 -1940s as the company moved its operations to White Plains in the 1940s. The ruler measures approximately 8"X1/2"X2 1/4" closed and is in very good condition.
A nice antique tool for the collector or anyone who loves rulers.