Features: This Spring Scale is made up of strong acrylic plastic and is provided with a suspension & a load hook starting from a zero adjuster. Comes with a capacity of 2.5N/250g 10N/1kg it is commonly used for laboratory use and is used for determining weight by attaching it a hook. Primary and secondary school teaching instrument teaching dynamometer. Spring dynamometer only, other accessories demo in the picture is not included Specification: Type: Spring Dynamometer Material: Plastic Applications: School, home Features: Dynamometer, Scientific experiment, Spring, Gadget Dimension: Total length: app.21cm/8.27in Plastic cylinder: app.16.5x2.1cm/6.5x0.83in Color: Blue Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Package includes: 1 Pc x Spring Dynamometer