The Pediatric BMI Three-Wheel Calculator is a valuable tool for healthcare professionals to assess whether children require specific dietary adjustments and exercise programs. This calculator provides essential information, including BMI percentiles and height and weight measurements. Constructed from durable .020 white plastic, it ensures long-lasting use year after year. The two outer wheels have a diameter of 3-7/8 inches, while the inner wheel measures 4-1/2 inches, making it user-friendly.