First go to:
https://www.blocklayer.com/degree-wheel.aspx
Fill in your values from handbook, EX: Intake:
open 22°30' before TDC - type 22.30!!
Follow page instructions, I choosed CD-size, and print PDF.
Cut out print and glued to a CD.
Wheel is hold at alternator by magnet, pointer made of coloured paperclip, bent and hold by magnet.
Photos here:
https://www.dropbox.com/sh/wpw59z5j0wr4or5/AABWfJp0ndQOaEr9fDZviHD8a?dl=0
Greetings from DK
Niels Knudsen