Richard Gridley was an American soldier during the revolution. When the Continental Congress first created a Continental Army in 1775 he was named to head the engineers (artillery} since he had been engineer-in-chief at the reduction of Fortress Louisbourg thirty years before.
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... the torque trying to make the gyro fall over.)
The axis of the gyroscope in the Dynabee is fixed to the spinning mass and it rests in a little groove inside the wrist ...