B59-079 GRAVITY INCLINOMETER. Pittsburg Novelty Co. Patented in 1887 by Oscar Fuller of Burlington, KS and manufactured in Pittsburg, KS, this level's pendulum compartment makes it one of the most unusual and collectible of patented inclinometers. All of them are rare, but this is the version that is designed to clamp onto a rule, which is the rarest of all. Brass cover plate has some dents and dings, but otherwise complete and clean. From the collection of Dennis Fisher. Good+ 700-1400