UBER Rare! O.B. FULLER Patent 1887 Clamp-On Style Pendulum Level

A very rare rosewood bodied clamp-on version of O.B. Fuller’s patent Sept. 13, 1887 pendulum level for use with a square. One of only three known examples. Produced by the Pittsburg Novelty Works of Pittsburg, KS. One of the most unique and gizmo-ish patented level designs.
OAL: 6 3/8″.