A portable, manual surgical instrument intended to cut a harvested cartilage specimen (e.g., tragus-derived autograft) to an accurate predetermined thickness for patient implantation during an ear/nose/throat (ENT) procedure (e.g., middle ear surgery). It typically consists of an adjustable cutting assembly with a handle, base, and thickness dial used in conjunction with a removable ENT cartilage cutter blade. This is a reusable device intended to be sterilized prior to use.