Trundle Wheel with Counter by Learning ResourcesTrundle Wheel with Counter Now it's easy to measure longer distances using the metric system! Counter clicks at each meter so students see and hear the measurement. Easy grip handle adjusts for various student and teacher heights. Non slip rubber tire for accurate reading. Counter reads up to 99,999 meters. Grades 1+ Ages 6+ Warning(s): SMALL PARTS (1). Not for < 3 yrs.