Apex ID by Kerr is a Third-generation apex locator. It is a compact and modern apex locator which used to locate the anatomical apex during endodontic therapy. This apex locator features the ‘User-set zero point’ in which you can Customize the "zero point" based on your initial clinical judgement. So, there is no need to constantly monitor the visual display, the audible signal will let you know when you've reached your preferred zero point. It offers accurate and uninterrupted readings in real time. The settings on the apex locator are customizable and the provide precise measurements. Apex ID has been designed to work under any canal condition including dry, wet or bleeding canals. It also provides precise measurements in canals filed with saline, EDTA, NaOCl or chlorhexidine. The audible sound signals provide a more intuitive user experience. The device small and easy to use. The measurements are displayed in 0.1 mm are reliable. The weighted base offers better stability of the device