Features:1.Accurate Measurement: The spring dynamometer has fatigue resistant spring that ensures accurate measurements even after repeated use.2.Premium Materials: 5N spring dynamometer, made of premium plastic and iron materials, stable and durable to meet the experimental needs.3.Easy To Use: This force meter is designed to be simple and suitable for students to operate. Adjustable pointer and scale plate for easy reading of the force.4.Lightweight And Portable: Compact force gauge with lightweight design, easy to carry and store. Suitable for elementary and middle school mechanics experiments.5.Multi Application: High performance spring dynamometer, can be used for secondary school students physics and mechanics teaching demonstration, student experiments, etc.specification:Item Type: Spring DynamometerMaterial: Plastic, IronProduct : 5NProduct Use: Secondary school students physics and mechanics teaching demonstration and student experiments commonly used instruments. Transparent plastic cylinder material (cylinder dynamometer)Scope of Application: Primary and Secondary School Mechanics ExperimentsPackageList:4 xSpringDynamometer