- (UNC-15) laser markings: 1-2-3-4-5-6-7-8-9-10-11-12-13-14-15. - Color coding: between 4-5mm 9-10mm 14-15mm. - Periodontal probes are used to locate, measure and mark pockets. - Determine their course on individual tooth surface. - The typical probe is a tapered, rod-like instrument calibrated in millimeters. - With a blunt rounded tip. **For further product information, please contact Chat Support**