Hartmann Aural Speculum Stainless Steel (Tip Size: 7.5mm) Cairns The bore diameter is 4mm

The bore diameter is 4mm and the base diameter is 41mm

allowing the surgeon to perform a biopsy and analyze the tissue

It is oval-shaped

inch) makes it suitable for use in larger nasal cavities

Hartmann Aural Speculum Stainless Steel (Tip Size: 7.5mm) Cairns The bore diameter is 4mmThe Hartmann Aural Speculum is a surgical tool used by otolaryngologists (ear, nose, and throat specialists) to examine the ear canal. It is inserted into the ear canal and the two blades of the speculum are opened to widen the ear canal, allowing the doctor to see the eardrum and other structures of the ear canal. The bore size of 7. 5mm refers to the diameter of the blades.