和紫外线探测仪不同的是，紫外线探测仪需要使用者要与主观的颜色进行对比以确定纸币的真伪，而展测仪则无需凭藉人的判断能力。

Unlike ultraviolet detectors that require the user to make subjective color comparisons to determine the authenticity of a bill, the Vistatector requires no human decision making.

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展测仪是一种钢笔形状的仪器，用电子线路查出纸币上是否存在磁粉-- 如果纸币上是有磁粉的，那么还要看它们是否在准确的部位。

The Vistatector is a penlike device that uses electronic circuit to detect whether the magnetic particles are present on a bill -- and if so, if they are located where they should be.

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