With a constrained ball attached to your pen you can draw a straight line without a ruler.
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Blog Archive
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2010
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September
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- 12 Worst Traffic Jams
- Farmer Creates Amazing Spitfire Shaped Maze
- Resedential Complexes of Moscow
- Stylish Valentine Notebook
- Garbage City
- How to Draw a Straight Line without a Ruler
- The Real Super Heroes
- The Bottle Cap Jewelry
- Scientist Created Dry Water
- Embarrassing Momments in Politics
- China WaterWorld: Future Resort
- Unusual Ferrari Car-Motorcycle
- What Happens when animals Behave like people
- Best Motor Cycle Ever
- Animal With Largest Horns
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September
(15)
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