Product Number: TA05347
In Stock (Ships within 1-2 business days)
Rolling the wheel forward or backward produces a loud
click every meter. Use it indoors or out to measure long distances, or demonstrate the relationship between the circumference and diameter of a circle. Wheel edge is designed to grip smooth surfaces, and is calibrated in centimeters (numbered in centimeters every decimeter). Made of high-strength plastic with molded, collapsible handle.