Here is a precision vintage Alvin 961 A Beam Compass drafting set, made in Germany. The set includes one 13" beam and one 7 7/8" beam. The set is complete except for the tube containing extra leads. The case is blue plastic. It is 14 1/8" x 3 7/8" x 7/8." It is in very good to excellent condition with a bit of wear to the case.