Built on the industry standard, the Root ZX Mini measures in both wet or dry canal conditions with accuracy. Utilizing the ratio technique, the Root ZX Mini unit provides a highly accurate indication of the file's location. The accuracy of the measurement is not affected by the presence or absence of blood, other discharges, electrolytes, saline, tap water or hydrogen peroxide. The compact and lightweight design makes it conveniently portable. It can easily move to work in any quadrant of the mouth. The Root ZX Mini measures just over 4" x 2 1/3"