No, it's not a "head backhoe" (that's what she said! ha.), it's an "acoustic listening device." These were developed as part of air defense systems research for the Dutch army between World Wars 1 and 2.
Doesn't this one look comfy?
Kinda cool though. I've always wanted to be able to hear everything going on around me. Also perhaps my grandmother would like one of these...you know, because her current hearing aid is just too darn streamlined.
Originally found on Swiss Miss.
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