HIGH TEMPERATURE RESISTANT: Used for oral dental measurement, resistant to high temperature and high pressure disinfection at 135℃. QUALITY MATERIAL: Dental Ruler Made of high quality materials, strong and durable, which can be used for a long time. ACCURATELY MEASURE: Dental Ruler With dental measuring ruler, dentists can provide accurate treatment for all patients. IMPORTANT ATTACHMENT: An essential accessory for dental treatment, Dental Endodontic Ruler is suitable for dental hospital or dental clinic. CLEAR SCALE: Dental Ruler With clear scale and accurate measurement, Dental Measuring Ruler is convenient for dentists to use.