Features: – The fatigue-resistant spring is mainly composed of specific measurement properties. It can be adjusted with hands, knobs and scales. The 14008 type scale is 5N.– The average deviation of any point of the dynamometer is no more than 1/2 division.– The maximum deviation of the repeated weighing at any point of the dynamometer is no more than 1/4 division.– It has been calibrated at the factory to prevent changes in the spring force caused by various factors, affect the accuracy of the indication, and should be retested before use. – The accuracy of the indication value is measured by the weight of the fifth-level balance. If the indication error is greater than 1/4 of the minimum scale, the rotating spring triangle can be adjusted to increase or decrease the number of the force coil.– When in use, the dynamometer is aligned with the pointer in the direction of the measured force so that the measured force acts axially on the small hook.– Do not allow the force measured to exceed the maximum scale.– Keep dry and not in contact with acids and bases. To avoid rust springs and bottom plates. Specification: Brand: QINGHUAModel: 14008Material: Metal, PlasticMaximum range: 5NMinimum scale: 0.1NSize: 20*4*3cm Package includes: 1 * 5N Spring Dynamometer