It looks very like the type I bought off ebay for £11 a few months ago: main reason was to keep tabs on the woodburner, but it has also told me cylinder 4 is running a bit cool.You can see some impressively low temperatures by pointing it up on a clear night and if you have a cat there's hours of fun to be had making it chase the laser. All in all, a very good toy.
£11....now you tell me .....i`ll chase the pussy round the bedroom later
...tryed it on mrs red and it works well ......