Forsyth Mfg Pat 1897 Bicycle Adjustable Spanner Wrench. Measuring 3 7/8" long and this weighs 1 oz unboxed. Herbert B. Rose of Buffalo, NY was granted Pat. No. 593,543 on Nov. 9, 1897 for the design of this tool which was made by the Forsyth Manufacturing Company also of Buffalo, NY. The full patent title is "Improved Device For Adjusting The Cones of Ball-Bearings and Other Analogous Purposes"