![early Dremel Moto-Tool](https://dylan.tweney.com/content/images/images/dremel.jpg)
We’ve just published a second “100 Greatest Gadgets of All Time” story — this one featuring 100 of the best gadgets suggested by readers–including the slide rule, the Princess phone, and Merlin. The #1 gadget of all time, according to Mobile‘s readers? I don’t think you’ll be surprised to find out what it is.