B58-246 TAILOR'S SQUARE. Ordway Patent. Patented in 1870 by Ira Ordway of New York. 36" rule with three sliding arms. The patent drawings show a number of other parts; we don't know if it was simplified for manufacture or if the other parts are MIA since this is the only one we've ever seen, but what's there is clean and attractive and marked with the patent date. From the Dennis Fisher collection. Good+ 100-200