Reading a ruler

Select difficulty level:

What length does the ruler show?

🔍 Hold your finger on the ruler and drag — the magnifier enlarges it

Length: cm

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Correct

What does this generator do?

Draws a ruler with a marked object. Your job is to read its length in centimeters.

See where the red object ends. Big ticks are whole centimeters, medium are halves, small are millimeters.