Students learn that force is a push or a pull, but may wonder how do you measure a push. These unique spring scales constructed with high quality clear plastic case include a specialized extended rod  that allows to measure both force of pushing or pulling of an object &  the weight of an object  from the load hook. These color-coded scales are calibrated in grams (to measure the weight) and Newtons (to measure the force), and have a clear flat area on the rod so, using a dry wipe marker, you can create your own scales. Cap. 3kg / 30 N