| 摘要 |
An apparatus is provided for warning when the mast of a forklift is not in perfect vertical and (i) the direction, e.g. forward or backward the mast is tilted, and (ii) the relative degree of offset from perfect vertical. The apparatus includes an operations package including a power supply, a control unit, an alarm unit and a level state detector for detecting the state of the forklift's mast thus permitting dramatically more economical and safer forklift operation.
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