操纵电器或在电器四周工作，应当使用尽缘的手工具。
Insulated hand tools should be used when working on or around electrical equipment.
与以往的手工评估方法相比，其优越性在于它的效率得到了很大的提高，并且其可操纵性强。
Compared with past craft assessment method, its superiority lies in its efficiency has got very great improvement, and its handling is strong.
其他辅助拍摄魁地奇的设备还有：一个长杆式的机器手臂，它可以将扫帚固定在上面，可以进行手工或者机器操纵；
Other equipment incorporated to film the Quidditch sequences included: a pole arm, on which the broom could be mounted and either manually or mechanically manipulated;
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