[ RadSafe ] SI/Conventional units wallet card

[Rees, Brian G]

A few weeks ago I saw a nifty plastic wallet card that had SI and conventional units on it for quick reference.  I'm sure somebody on Radsafe knows where I could get a few of them.  Yes, I KNOW that we should all be bi-unit able, but for some of us that don't have to all the time this looked like a useful thing to have available....  And yes, I know how to convert between them all, but when conversing with someone it's nice to have a ready reference.

Where can I get some of them?

Thanks,
Brian Rees