TouchLens: touch enhancing tool

Here we show a touch-enhancing tool that operates not only as a disturbance filter, but also, supposedly, as a magnifier of surface undulation. This tool, which we named "TouchLens," is composed of a sheet and numerous pins regularly arranged on one side of the sheet, having no electronic or mechatronic components. The most promising application of TouchLens is its use in inspection of sheet metals to detect small deflection defects and skill transfer in automobile industry.

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