An
instrument used to perforate the foetal skull. The American
Simpson's perforators had scissor handles but this is an example of
the English Simpson's perforator with an articulated handle joint
(similar to the European Naegele'sperforator) which locks
the tip ensuring that the pointed ends stay firmly together while
entering the skull. Marked "Harris & Co Birmingham". There is some
early oxidation on one side as shown.