Pederson Vaginal Speculum, Sklar. 4-3/4 in., 4-3/4 in. x 1 in., Blunt, Straight, Smooth, Large, Stainless Steel. The Merit Pederson Vaginal Speculum is a gynecological instrument used for performing pelvic examinations, Pap Smears, and examining the cervix. It is a double blade duckbill speculum inserted with the blades closed. The blades are then opened by an external lever and screw. The blades of the Pederson Speculum are more narrow than the blades of the Graves Speculum. The practitioner can best determine which type and size speculum is most appropriate for the patient. Merit instruments are Sklars office-grade line of products and most commonly utilized for routine and in-office minor procedures. These cost effective, high quality instruments are crafted from Pakistan steel and come with a 10 year guarantee. This product is a large sized speculum with 4-3/4 in. X 1 in. blades.