All of the following are the uses of given instrument except :
Mollison's mastoid retractor Self retaining mastoid retractor with four prongs on either blade USES- Harvesting Temporalis fascia Used in mastoidectomy to retract soft tissues after incision and elevation of flaps It is self retaining and haemostatic Mastoid Gouge -Help in removal of bone Perkin's mastoid retractor has 1x3 prongs