[James C. Bennett]

Again, whose “unaided eye”?

I’ve been able to eye-read micron-size etched numbers from optical elements, for years.

These arbitrary qualifications for things to be deemed equally arbitrarily “clean” or “unclean” always crack me up. The jokes are all halal!

[null and void]

I’ve been able to eye-read micron-size etched numbers from optical elements, for years.

Enjoy it while you can, I used to be able to as well.