It was a "Worx" ( higher quality Chinese brand - if there is such a thing

Now previously I have found laser guides to be as useful as tits on a bull because of the countless hours one has to spend getting them lined up and then one drop of the saw - bang - it's out of wack once more.
But this Worx model came with a "Saw blade MOUNTED" laser which means it throws a light directly down the edge of the saw blade.
This is as accurate as you can get with laser guided tools and whilst it's hard to pick up in bright sunlight, for the average work shop it gives a good beam.
Now I see you can buy these as retrofits
http://www.irwin.com/irwin/consumer/jht ... Prod100009
I may just get one for my circular saw as well now.