【實用教育app】Willy's World - Hand Signals|最夯免費app

Willy's 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.

Willy's World - Hand Signals covers the complete range of hand signals for the following crane types:

- Mobile Cranes

- Tower Cranes

- Overhead Cranes

- Pedestal / Portal Cranes

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免費玩Willy's World - Hand Signals App

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