In reply to snoop6060:
> Might Amazon prime that and then send it straight back
You can get them cheaper elsewhere, not sure of the accuracy, but have tested the repeatability and it's pretty good.
Like I said, if you're in a club, or maybe have a lot of mates, they're bring out the competitive side of people and it's very funny.
At our last AGM we charged £1 for two goes, one go on each hand, winner got a £5, a ladies and gents competition, the rest went to charity. We got £30+ for the RM out of 22 people.