Estimated Date: 1880
Manufacturer: Codman and Shurtleff
Description: 4.5” long with hard wood handles, the handle curves up and is curved to fit a finger easily, the other end curves down in the opposite direction and bends back in a U with the end curved out to grasp the teeth. The ends can be kept open at a predetermined size with a thumbscrew. A second version with a thumbscrew only is also shown in the second image.
Reference 1: 46