This instrument was designed expressly for application to the cervix and was surely employed for both wet cupping after scarification, ordinary dry cupping and for expelling a tampon comprised of cotton dampened with a solution of alum into the vagina.  – Truax/ Emmet.
A fine example of Thomas’ Dry Cupper & Tampon Expeller consisting of a hard rubber cylinder, enclosing a piston with rod and thumb ring.  The piston consists of a leather packing fitted tightly within the cylinder so as to produce a vacuum.