Features: Use: Bar box spring dynamometer for teaching in schoolStructure: It is mainly composed of shell, spring, panel, pointer and so on. Strip box dynamometer is a series of products.Before use, you need to zero. If the scale is not accurate, you need to adjust the stiffness coefficient. Zeroing is divided into horizontal zeroing and vertical zeroing.Scale value: 0.25kg=2.5N (min scale 0.05N) Specification: Brand: KEPUModel: 14003Material: Metal, PlasticMaximum range:2.5NMinimum scale:0.05Size: 15*3.5*2cm Package includes: 1 * 2.5N Bar Box Spring Dynamometer