for various tests and treatments for nasal and throat area with aural area as well, Henke-Sass comes with a large range of solutions and Wolf being one of them used for the gentle examination of the nasal cavities and the sinuses. Features of this instruments are as follows; Otoscopes: -It comes in diameters of 1,9 mm 2,7 mm 4,0 mm - The Direction of views are 0°,30° 0°,30°,70° 0°,30° -Working length approx. 100 mm approx. 75 mm approx. 50 mm -Locking device Storz type Storz type Storz type