Speculums are medical instruments used to gently dilate body openings for visual examination. Vaginal speculums (most common) facilitate gynecological exams, Pap smears, IUD insertion, and cervical biopsies by separating vaginal walls. Types include Cusco’s (bivalve, self-retaining for routine use), Graves’ (wider blades for parous women), Pederson (narrow for virgins/postmenopausal), Sims’ (single blade for surgery), and disposable plastic (hygienic one-time use). Other variants: nasal (ear/nose/throat), rectal (proctology), and pediatric sizes. Stainless steel/plastic construction ensures autoclavable sterilization; lubricate blades, insert angled downward, open gradually to minimize discomfort.