No adjustment requires, the focus is preset. Clear from 20 m
The silicone ensures good resistance to impact and excellent stability
K9 quality mineral glass filters and focus lenses.
PMMA poly(methyl methacrylate) polymer eye lenses
CLARITY OF IMAGE
FIX FOCUS System: no adjustment necessary, the focus is preset and definitive to see clearly from approximately 20 m.
The no adjustment FIX FOCUS system involves keeping sight glasses on where worn so you can see a clear image.
Ideal for watching the short and medium distance and particularly suited to children as it is easy to use.
ADJUSTMENT FOR WEARERS OF GLASSES
The no adjustment "fix-focus" system involves keeping sight glasses on where worn so you can see a clear image.
In such a case, move back the rubber eyepiece so you can pair your glasses to the focus without risking damaging them.
COMFORT AND DURABILITY
Excellent grip and comfort with the silicone coating.
The silicone also ensures good resistance to impact and excellent stability.