Trying to come up with a simple way to know how many degrees I've moved distributor vs. using timing light every time.

I currently mark the distributor and the block where I know, at a glance, where 36° total is for me.

Since I started playing with nitrous, I retard different amounts for different tuneups.

I thought about using the base of a torque angle gauge or degree wheel and some way mounting it to flat base of the distributor. I googled 360° 2.25" angle gauge and didn't come up with much.

Yes, I know there are MSD controllers that allow you to retard/advace but was trying to keep it old school.

Any ideas?

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.