Category: Pre 19th Century Instruments
Estimated Date: 1800
Description: 10” sheath with calibrations and valve for evacuation houses a rod with nine hooked arms which open when pushed forward of the sheath. Central to this rod is a toothed head which can be turned by rotating a bone wheel on the other end and adjusted with a sheath for the thumb. The whole instrument is 17” long.
Reference 1: 159