Use Your Headphones as a Tape Measure

<img alt="headphone-ruler.png" src="" width="305" height="266" class="postimg right" /r Collaborative DIY site Instructables suggests marking off inches on your headphone cord so you've got a quick measuring tape on hand wherever you go. The guide uses iPod headphones, which measure about 79cm, marking off every centimetre in black and every 10cm in red.


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