| 摘要 |
<p>A platform 4 with four caster type wheels 3 which are spring mounted and retractable. In use, when an operative steps onto the platform the wheels become inoperable allowing the platform to engage with the ground, forming an immovable support. The platform has a non-slip surface, and supports a safety rail on three sides. The rail may be removed for easy storage. The rail may be fitted with a pouch or tray to carry tools or other aids.</p> |
