Maybe the best mechanical paddle?
This paddle is a bit like the old Wonder Signal with more changes, can be handed out for examination and is made of high quality machined metal.
You go from three yellows, to two yellows and a red, to red white and yellow, to red white and blue – at which point the paddle can be handed out. Nothing to take away, easy to do, and my favorite of the Porper Paddles!
Click here for more information.