[Cobrajr122]

Originally Posted by lurkingknight

from the info posted at http://www.elvex.com/Facts-What-chan...Z87.1-2010.htm




It says frame, not the lens itself according to the way it was written here.

This is what I read as well, but when you read the testing procedure for the high mass test it DOES test the lens.

"The alignment shall be such that when the
missile is dropped, its point is in line with the
center of either of the eyes of the headform. "

Also, all this guesstimating of weights of steal balls is not needed as the weight is defined in the tests.

Drop ball test - "A 25.4 mm (1 in.) diameter steel ball, weighing 68 g (2.4 oz)"

High velocity impact test - "a 6.35 mm (0.25in.) diameter steel ball weighing 1.06 g (0.037 oz)"