Decades: 50s BC 40s BC 30s BC 20s BC 10s BC - 0s BC - 0s 10s 20s 30s 40s
8 BC7 BC 6 BC 5 BC 4 BC 3 BC 2 BC 1 BC 1 2 3
Births
Deaths
... a small round opening on top of it, which is where you can manually start the gyroscope. Once the gyro is spinning, tipping the device will cause the gyroscope to start ...