World's Smallest Drilling Machine
Despite what is useful or not but this is a drilling machine , the smallest in the world has ever seen so far with a size of no more than your thumb. This drill can actually work like a real drill but it is unfortunately not able to drill any given shape and drill a small machine.
This drill also features a place that makes it a key chain. the author himself admitted that the smallest drill bit is made only because she liked it. But if you want you can buy with a price of € 85 (approximately Rp. 1.25 million).
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