This is a timing tool made to fit a Evinrude 6hp Fisherman old school outboard motor.

Instead of setting the timing by the point gap (0.20") you can now set the timing in the more exact way.

Made to fit my motor, but should fit the following just as good:

1951-1976 5, 5.5 and 6 hp motors

1951-1958 7.5 hp motors

1964-1973 9.5 hp motors

1951-1963 10 hp motors

1951 and up 12 hp Gale motors

1951 14 hp motor

1951-1972 15, 18, 20, 25 hp motors

1973-1976 18, 20, 25 hp motors

Video on how to do it (not mine):

https://www.youtube.com/watch?v=eNK2TEeQQv0