| 摘要 |
A speed and distance calculator for skis having a housing (1, 2) detachably secured to a ski (14) and having a rotatable wheel (17) journaled on the housing. Two magnets (19) carried by the wheel (17) interact upon rotation of the wheel with a sensor (20) to send a signal to a microcomputer (21) correlated to the number of revolutions of the wheel in unit time. The output of the microcomputer is shown in a visual display (7). |
