Specification Brand : AYNEFY BulletPoint1 : [ACCURATE MEASUREMENTS] Spring dynamometer with adjustable features for accurate force readings in physics experiments. BulletPoint2 : [ MATERIALS] Made of plastic and iron for long-lasting performance in teaching demonstrations. BulletPoint3 : [HANS-ON LEARNING] The portable spring scale allows students to directly engage in physics and mechanics experiments. BulletPoint4 : [MULTI-PURPOSE USE] Commonly used in student experiments and physics teaching for a wide range of applications. BulletPoint5 : [4PCS SET] Includes 4 premium spring dynamometers for multiple demonstrations and experiments. Color : As Pic Shows ExternallyAssignedProductIdentifier : 7657670072979 ItemName : Premium Spring Dynamometer for Student Experiment, Superior Spring Scale for Mechanics Teaching, 4 Pieces (2.5N) ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 19 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : industrial-spring-scales Manufacturer : AYNEFY Material : Plastic ModelName : AYNEFY0byunqm3ac-12 ModelNumber : AYNEFY0byunqm3ac-12 PartNumber : AYNEFY0byunqm3ac-12 ProductDescription : 1. PREMIUM MATERIAL: The spring dynamometer is made of premium plastic and iron materials, fatigue resistance spring ensures accurate measurement. 2. APPLICABLE: The spring dynamometer can be used for teaching demonstration of physics and mechanics for high school students and common instrument for student experiments. 3. ADJUSTABLE DESIGN: The spring dynamometer has an adjustable pointer and scale plate for easy force reading. 4. SUPERIOR PERFORMANCE : The spring dynamometer is manufactured to exacting standards with clear and accurate scales. 5. EASY TO OPERATE: The portable spring dynamometer is easy to use and suitable for practical by students. < br/> Specifications: Item Type: Spring Dynamometer Material: Plastic, Iron Usage: Commonly used in physics and mechanics teaching demonstration and student experiments for high school students . Scope of application: mechanics experiments in primary and secondary schools