Ergonomic handle with backlit digital display provides easy to read measurements at a glance. Digital display measures to 1″, 1/100th, and/or 1 cm increments. Memory stores up to four measurement values that user can quickly recall. Digital brake stops wheel measurement with a push of a button. 3-section aluminum telescopic handle with quick clamps for easy storage. Auto shut-off saves battery life by turning unit off after three minutes of suspended operation. Batteries provide up to 30hrs of intermittent use.