This 8-inch theodolite "especially adapted for triangulation" was made between 1887 when Saegmuller began putting serial numbers on Fauth instruments, and 1905 when Fauth & Co. went out of business. The edge of the horizontal circle is beveled, graduated, and read by opposite micrometer microscopes to single seconds. This instrument belonged to the University of Missouri at Columbia. New, it cost $450.
Ref: George N. Saegmuller, Descriptive Price-List of First-Class Engineering & Astronomical Instruments (Washington, D.C., 1894), p. 50.