Description
W. & L. E. Gurley No. 47 Surveyor's Solar Transit: W. & L. E. Gurley No. 47 Surveyor's Solar Transit, Troy, New York, c. 1912, 5 1/2-in. engraved silvered dial reading "W. & L. E. Gurley, Troy, N. Y. /11576, " with dual vernier windows, "A"-frame supports with...