Decades: 1260s 1270s 1280s 1290s 1300s - 1310s - 1320s 1330s 1340s 1350s 1360s
Years: 1310 1311 1312 1313 1314 - 1315 - 1316 1317 1318 1319 1320
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... gyroscope is best when the precession of the gyroscope is supported and amplified by wrist motion. It takes a while until one finds the "rolling" point, but the gyro ...