Details
A surveyor's level
with Y-trunnions, rack-and-pinion focussing to eyepiece and objective, underslung spirit level and four-screw mounting -- 20½in. (51.5cm.) long, in mahogany case with various labels of W.&L.E. Gurley, Troy, N.Y. and B.K. Elliott Co., Pittsburgh, late 19th-century
with Y-trunnions, rack-and-pinion focussing to eyepiece and objective, underslung spirit level and four-screw mounting -- 20½in. (51.5cm.) long, in mahogany case with various labels of W.&L.E. Gurley, Troy, N.Y. and B.K. Elliott Co., Pittsburgh, late 19th-century