| 摘要 |
A swing training and practice device for sports such as golf consisting of a length of substantially rigid hollow tubing having a grip at one end and a weight at the other end with a convoluted tube positioned interior of the substantially rigid tube extending into the length of the tube from adjacent the weighted end. The device, when swung produces an audible tone, the characteristics of which vary with the speed and trajectory of the swing. Production of a repetitive, constant tonal pattern thus indicates consistency of swing.
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