Nikon BDC Reticle Manual De Instrucciones página 13

Care of your Nikon Scope
Rifle scope lenses should be kept as clean as possible during use. Never clean debris and marks from scope lenses by rubbing with a dry cloth or tissue. Always moisten the lens before wiping.
Preferably brush loose material from the lens surface, moisten with a lens cleaning fluid and then wipe clean in circular motions. Lens cleaning solutions are available in spray-pump containers or
simply apply a few drops to the lens cleaning cloth.
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