【實用工具app】Ruler4Angles|最夯免費app-綠色工廠好玩App

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.