6904-198 LYMAN patent brace. Patented in 1871 by John Lynam and manufactured for only two years by MILLERS FALLS, it used leaf springs for the ratchet mechanism and was a flop. 10" sweep, marked both with the patent date and MF's "No. 2" designation, lignum vitae head, surface oxidation but no pitting, works smoothly. Good+ (KNT043) 40 - 80