TC25-183 BUILDER'S WYE LEVEL. Iszard-Warren No. 50. Lacquered brass construction, 12" telescope with good optics, 5" hanging level. Four point adjustable base. Part of the "Sterling" line of Iszard-Warren, founded in Philadelphia in 1908 and a predecessor to Warren-Knight. Includes the "trivet" that allowed it to be used on a flat surface rather than a tripod. A copy of the description from the company's 1912 catalog is included. Good+ 100-200