The JJF 1313-2011 standard applies to the type evaluation of ultrasonic range finders and handheld Laser rangefinders with a measurement range of up to 100 meters. The outline covers the basic requirements and test standards for handheld range finders, including the application of ultrasonic and laser ranging principles. Relevant national standards and environmental testing methods, such as alternating humidity cabinet testing, vibration testing, and safety requirements for laser products, are cited to ensure the Reliability and safety of the instrument in practical applications. This outline provides systematic guidance on the type evaluation of range finders, which are suitable for measurement applications in the fields of architecture, engineering, and safety.