Rare! Signed! HALL & KNAPP No. 12 Brass Strapped Rosewood Level

A very rare signed example with dark, rich rosewood and unpolished brass. Bold Hall & Knapp eagle mark. Fully brass strapped with 54 screws! Both vials are full and working. OAL: 20″. One of only 2-3 signed examples I’ve seen. A special pre-Civil War level.