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Αρχικό μήνυμα απο Physalia

Έχει απαντήσει ο ίδιος στα σχόλια:

william trubridge 3 months ago
- I am using fluid goggles: they have lenses mounted that compensate for the defraction of light, and allow you to fill the goggles with water.
That way there is no airspace to equalise. W.

Merci