i153.photobucket.com/albums/s218 … acho04.jpg
Writing goes face up so when you close the tacho it makes contact with the scribes.
i153.photobucket.com/albums/s218 … etacho.jpg
On the cassette tacho, make sure you get the chart underthe 2 teeth at the top or it will chew the tacho to pieces! I know this through experience!