| 摘要 |
<p>Pacing apparatus (10) primarily for use in swimming pools (11) comprising an elongated sealed and transparent housing (13) having located therein a plurality of lamps (21) which are illuminated in sequence from one end of the pool (11) to the other so that a swimmer may view the lamps (21) and maintain a desired pace of swimming in accordance with the rate of illumination of the respective lamps (21).</p> |
