Custom Printed 30 cm Mood Changing Wood Rulers

Rule your next collage fair, trade show, or seminar with our custom printed 30 cm Mood Changing Wood Ruler.

• Watch it change color ad you use it to measure whatever you like. The heat from your hand triggers the color changing.
• Made from wood and long enough to measure up to 30 cm.
  
• Uses the Metric scale.
• Available in many promotional vibrant colors.