Re: Recycling helmets (helmets sub-forum)
Posted: 3 Mar 2020, 10:21am
mjr wrote:The utility cyclist wrote:Unless it was test dropped on a curved anvil shaped object as you do in real life , from a specified height with a lens attached we'll never really know the protective values of said filter
Only the Snell lens-smashing test still uses a curved anvil. EuroNorm only requires flat and straight-edge
And if its a Japanese lens?