These little shutters are brilliant. I got a few of them to use in various laser projects. The seller is a well known member on the Holography Forum and can be trusted.
Cheers
Jem
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001