It is stable and works very well. You and your students will be satisfied. When scales are 2 container of transparent plastic. Each container holds a little more than 1 liter. Each container has a push-on lid. The objects to be weighed and the weights you can both put on the lid and place in container. In the bottom of the scale 2 sets of weights are housed. (One on the front, the other on the back). Beam balance with 2 containers (removable cover) 11 metal weights: 2 x 1g, 2g, 5g, 10g, 20g, 1 x 50g 14 plastic weights: 4 x 10g, 8 x 15g, 2 x 20g
