The new Beyes advanced Accurator-A Apex Locator has been developed to accurately measure the length of canals in all conditions,including dry,wet and where blood is present with industry leading accuracy. Automatic Calibration No manual calibration necessary. The Automatic calibration ensures accuracy and eliminates the effect of changes in temperature,moisture,etc.inside the canal,even during treatment. No Zero-Adjustment It is not necessary to set the device on zero before measuring each individual canal. Autoclavable Accessories Autoclavable file holders and lip clips to prevent contamination between patients. Accurate Measurement Instant accurate measurement of canal length Large Color LCD The large color LCD screen is easy to read, and provides a clear progressive display with high contrast.