So the pilot took his dog tags off and hung them from the compass binnacle and used the "cup in bowl" compass as a very rough AI (spirit level) and used the dog tags as a fine tune AI.
If the tags leant right they would compensate and so on.
It meant they didn't exceed Vmax, or Vmin and they didn't exceed AoB and stayed relatively 'upright' until they broke cloud and landed.
How's that for improvisation!
It would work in the simulator, yes as a spirit level, but not as an AI in the real aircraft. A simulator is fixed to the floor and can't sustain any "G" so the dog tags would always point to the earth.