将一些可放大影像的配备，装设在眼镜上，或是手持式放大镜、望远镜、特制的电视机，皆为适用之助视器具。
Some of the images can be enlarged with the installation of the glasses, or hand-held magnifying glass, binoculars, a special TV, all of which were applicable AIDS equipment.
一种高度绝缘的包括分压器的手持式探头经常被使用而且作为某些设备的附件来配备。
A highly insulated hand-held probe containing the voltage divider is often used and comes as an accessory from some manufacturers.
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