B65-569 LEVEL. Peterson Patent. Very clean example of the uncommon level patented in 1891 by Charles Peterson of Marinette, WI. The upper part of the stock was designed to provide protection for the vial and to act as a handle. 30" long, oak with brass bottom plate and vial surround marked with patent information. One of the nicest examples we've seen. From the collection of David Jeffers. Fine 200-400