HALL & KNAPP No. 20 Double Plumb & Level – c. 1855

An early and uncommon 29.5″ example with the model number stamped on one end. All three vials are full and working, and have the green paper behind them. See page 133 of American Levels and their Makers by Don Rosebrook for further information.

SKU: 11102 Categories: , Tags: , ,