the housing with a moist cloth. Clean the lens q with a soft, lint-free cloth (e.g. glasses cleaning cloth). In case of heavy soiling (e.g. fingerprints), clean the lens q carefully with a damp cloth [...] abrasive cleansers! These could destroy the lens q. 8 Technical Data X Optics: Refractive power 14 diopters 20 diopters 28 diopters Magnification 3.5 × 5 × 7 × Diameter 58 mm 58 mm 58 mm X Stock Number: [...] provide a war- ranty for the functioning of the product described in this manual with regard to faults arising in connection with manufacturing errors or material errors. In event of damage due to improper