A convenient online ruler that could be calibrated to the most accurate ruler, one side is metric ruler, another side inch ruler, measurements in cm, mm and inch
Inch Ruler
Ruler - Apps on Google Play
Use actual size online ruler
Online Ruler
Actual Size Online Ruler (inches, cm/mm) — measure something!
24 inch ruler online, significant trade 50% off
Ruler - Apps on Google Play
Ruler - Wikipedia
iRuler.net - Online ruler Online ruler, Ruler, Quilting tips
Top 46 Similar websites like iruler.net and alternatives
7 Online Rulers In Metric And Inches