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iPhone / iPad
  • Utilities
  • Education
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The Ruler4Angles is the unique tool for measuring angles with an ordinary folded ruler and with high accuracy.

-Check, copy, half, double angles In Real Life.
-Construct angles In Real Life.
-Settings attributes for most common rulers.
-Settings for different usage.
-Exhaustive documentation on usage and hints.
-All mathematics behind included.
-Export a note on your folded ruler
-Suitable for education in math, crafts
-Create own spreadsheet using math behind documentation
-Hints on building your own ruler.