Mystery Illustration 59

The purpose?

Answer here.

And after the jump.
     Posted By: Paul - Sun Oct 08, 2017
     Category: Technology | 1910s

An exterminator listening for bugs in the wall, I thought.
Posted by Virtual in Carnate on 10/08/17 at 10:20 AM
Micro-megaphone? Sounds like one of George Carlin's self-cancelling phrases, like "jumbo shrimp."
Posted by KDP in Madill, OK on 10/10/17 at 09:07 AM

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