Retired merchant seaman Waldemar Semenov, 95, donated the compass in 2005. In 1942, Semenov, a Russian immigrant, was serving as a junior engineer on the American merchant ship SS Alcoa Guide ...

The Greek mathematician, Euclid, limited the constructions in his Elements of Geometry to those that could be done with an unmarked straight edge and rudimentary compass. Ancient Roman dividers ...