This is an antique Fleam or blood letting tool also called a lancet.

The same theories and practices that prevailed for human medicine were applied to the treatment of animals. Not only were horses routinely bled, they were also cupped and leeched. Manuals of veterinary medicine gave instructions for the bleeding of horses, cows, sheep, pigs, dogs, and cats.

Weight .13 kg
Dimensions 5 x 1.5 x 4.5 cm