RT412D CST/berger 11-1/4 Digital Single Measuring Wheel (Rolatape) RT412D CST/berger 11-1/4 Digital Single Measuring Wheel (Rolatape) features a ergonomic handle with backlit digital display providing easy to read measurements at a glance and memory stores up to four measurement values. RT412D CST/berger 11-1/4 Digital Single Measuring Wheel (Rolatape) features a digital brake that stops wheel measurements at the push of a button and auto shut-off saves battery life by turning unit off after three minutes of suspended operation and provides up to 30 hours of intermittent use.