Williams Color Probe Williams color coded probe with 1-2-3-5-7-8-9-10 marking. Williams color coded probe with accurate, smoothly finished black 1-2-3-5-7-8-9-10 markings, which will not chip, flake or fade. These probes are commonly used as a diagnostic instrument to measure pocket depths in order to establish the overall state of a patient’s periodontal health. Technical Specifications [...]