This is a standard architect's level, with a relatively short telescope and a small graduated
horizontal circle. Gurley began making levels of this sort in 1874, and was still making them
fifty years later. According to Gurley hyperbole, this level was "extensively used by intelligent
and enterprising architects, builders and millwrights on construction and building work, as well
as by engineers and surveyors in the grading of streets, sewers, irrigation ditches and drains."
This level has no serial number, and so was made before 1908.
Ref: W. & L. E. Gurley, Gurley Engineering Instruments (Troy, N.Y., 1920), pp. 68-69.