Okay, okay, I'll just spin the outer two thirds. Would that help?

Edit to add: Or an arrangement like a tank turret, only actually attached.

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In your rush to call everyone "entrenched" or closed-minded or "limited" you fail to note that the "limit" here has a very natural boundary: that point at which the evidence stops. - JayUtah

Science fiction was never meant to be an educational tool. - Editor Amazing Tales