Mint! KEUFFEL & ESSER 3-1/2 Inch Nickel Plated Inclinometer in Original Box

Awesome little 3.5 inch square inclinometer housed in its original wooden case. Level is super fine retaining full original nickel plating. Unique octagonal vial housing has two sight apertures, allowing viewing of the level from top or bottom. Inside of the box lid has the maker mark. Vial is full and working. Keuffel and Esser Co. was founded in New York by German immigrants Wilhelm J. D. Keuffel and Hermann Esser in 1867.