Newcon Optik 150 Manuel D’Utilisation

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  Do not take the cover off the lens unless necessary. 
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  Keep away from heating appliances and central heating. 
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  Do not apply excessive force to lens assembly, agile 
elements and thread connections. 
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  Due to considerable optical magnification of the eyepiece 
some small structures inside the tube coating in the form 
of dark and/or white points may be seen in the field of 
view; this does not affect the capabilities of the device; 
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  The device resolution may change from the center 
towards the perimeter of the field of view. This is an 
inherent feature of the image tube type utilized in the 
device.  
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  Remove the battery during periods of non-operating and 
when storing the device for a long period of time.