Willy's World - Hand Signals


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참고 교육
개발자: North American Crane Bureau
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Willys World - Hand Signals is part of a new range of learning and reference materials that are designed for use on mobile devices such as phones and tablets.

Willys World - Hand Signals covers the complete range of hand signals for the following crane types:
- Mobile Cranes
- Tower Cranes
- Overhead Cranes
- Portal Cranes