Curta Mechanical Calculator pure mechanical precision engineering marvel, pure mechanical no electrical power at all. This amazing mechanical calculator is invented in 1940.
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In this autocad tutorial you’ll learn how to draw anchor bracket. Something like this;
1. Open a new drawing. Click New 
2. Make sure Ortho mode is ON, (it ON when it glow in blue)
click the icon to turn it ON or OFF. (or press F8 to toggle)
3. Type z [Space bar], type e [Space bar]. This will zoom extents your drawing area.
4. Make sure you have this requirement Layers for your drawing.
No idea how to create layer? Read autocad tutorial about how to create layers.
5. Make sure layer 0 is selected as current layer.
6. Click Rectangle, 
specify first corner point at 0,0. Type 0,0 [Enter].
Specify other corner point at 2,1. Type 2,1 [Enter].
[click to continue…]
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