Quality material: Wrapped in a metal shell, it is more impact- than ordinary glass thermometers, reducing the risk of breakage. The is scratch- and wear-, and the scale remains clear after long-term use, reducing the frequency of replacement. The structure is stable and suitable for students to operate frequently, making it a reliable choice for classroom experiments. Size information: The lab thermometer is 14.6 cm/5.8 inches long, mercury-free and safe material, friendly and reliable. Avoid the risk of leakage of traditional thermometers and the safety of students and teachers. It meets international environmental standards and can be safely applied in sensitive places such as schools and laboratories. Even if it falls accidentally, it not produce substances, making it to use. Dual scale design: The mercury-free thermometer adopts a V shaped dual-scale design (℃/℉), which is convenient for students to intuitively compare Celsius and Fahrenheit temperatures and easily master temperature scale conversion. scale printing and small measurement error the scientificity and reliability of experimental data. Large font display and clear readings are suitable for classroom demonstrations and group experimental observations. You receive: 24pcs of scientific thermometers, suitable for class group experiments, ensuring that every student can practice. Unified calibration, consistent data, easy to compare and analyze, improve the efficiency of experimental teaching. packaging, convenient storage and management, reduce the possibility of loss and confusion. Applicable scenarios: The student thermometer is suitable for classroom, laboratories, and home science experiments to help understand the relationship between temperature and the environment. and portable, it can measure temperature changes of various objects such as indoors, outdoors, and liquids. It is an ideal teaching aid for physics, chemistry, biology and other courses, stimulating student's interest in science.