A 19th-Century oxidised brass surveyor's Y level, by W. & L.E. Gurley, the telescope with rack and pinion focusing, bubble level with graduated silvered scale, mounted on the limb by twin supports and clamps, on 4 screw tripod mounting with tangent screw adjustment, with some accessories, makers trade label and additional label for Herm. Pfister 195 West 5th Street Cincinnati - 23¾in. (60.3cm.) wide.