Spit IIA Speed in game test

[Crumpp]

That's true without a radio, and I did set to listed value of chart.

Enroute and arrival???

No way. You can get a very rough approximate by setting arrival field elevation before you depart and reading the setting off the altimeter. The closer the destination, the more stable the air, the better approximation in most cases.

You can call flight watch enroute but not if you don't have a radio. There is no way to get accurate enroute settings just looking at a chart and using field elevation without physically being on the ground at that airfield.