October 10 - Spiro T. Agnew resigns as vice president of the United States and then, in federal court in Baltimore, pleads no contest to charges of evasion of income taxes on $29,500 he received in 1967 while he was governor of Maryland. He is fined $10,000 and put on three years' probation.
... and the groove rims will accelerate or brake the spinning gyroscope, with a maximum effect when the axis starts "rolling" inside the groove. (Compare with graphic below.) ...