| 摘要 |
An apparatus for balancing a wheel mounted on a vehicle by visually observing its off-center movements upon rotation thereof. The apparatus includes an indicia applied to the wheel, a base supporting a housing, a variable strobe lamp connected to the housing and directed toward the indicia, an optical unit enclosed within the housing, the unit including a first lens focused upon the indicia and a second lens adapted to transmit the image of the indicia from the first lens to an observer, and an indicator disposed between the first and second lenses to relate to the observer the off-center movements of the rotating wheel and thereby indicate both the amount of weight required to balance the wheel and the location for the placement thereof. A bail and stylus pivotally connected to the housing may be included to form the indicia on the wheel.
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