Material: Made of plastic and metal, the metal hook is durable and resistant to breaking, allowing for repeated measurements. Convenient to carry: The manual scale features a spring inside and engraved scale markings on the outside for clear and precise readings. It includes a bottom hook, making it portable for travel use. Practical tool: Suitable as an eonal tool in classrooms to engage students and support learning, or as a small accessory for measuring lightweight objects at home. Simple operation: The balance offers two calibration units—gram and newton. To measure, simply hang the object on the hook, hold the scale vertically, and read the value where the spring stabilizes to determine the weight quickly. Packing: Set of 2 spring balance scales, 5N, capable of measuring up to 500g.