RT204M CST/berger 4” Dual Metric Measuring Wheel (Rolatape) RT204M CST/berger 4” Dual Metric Measuring Wheel (Rolatape) features a comfortable lightweight/compact rubber handle grip and precision molded tire providing accurate measurements on any smooth, hard surfaces. RT204M CST/berger 4” Dual Metric Measuring Wheel (Rolatape) features 3-section aluminum telescopic handle that quickly collapses with a twist motion for easy storage and has a counter with 1cm increments and a reset switch with ABC housing.