Smooth movement - but only when you want it The FOCUS™ X-ray is extremly stable yet amazingly light and easy to handle. It positions smoothly with just one hand! The movement stops when you want it to stop - no drifting or re-positioning. This exceptional stability is a result of the ADM (Anti-Drift Mechanism) in the scissor arm. This new innovative design provides complete immobility after positioning, which is essential in order to get clinically correct images.