Rare ALBERT PERKS Patent Bronze Straight Edge Level

One of only a handful I’ve seen. Patented April 25, 1905 by Albert J. Perks of Springfield, OH and manufactured by Webster & Perks Tool Co. as noted on a label under the vial. Excellent original condition noting one missing screw. Vial is full, working and original.
L: 3 1/16″. H: 3 1/4″.