Specifications:
Material: Plastic
Color: Pink, Blue
Size: 24.5 * 6.4cm
Usage:
Slide the ruler to select numbers from the box, observe the numbers in the middle combination, and determine that the numbers in the box are the sum of the upper and lower numbers on the right.
Note:
1. Manual measurement, please allow 2cm error.
2. Due to the brightness of the light, there are slight differences between the image and the actual object.
Package Included:
1 * Math Decomposition Ruler