How to determine the star of traditional steelyard? Where is the location?

The star of traditional steelyard is determined by the fulcrum of steelyard. For smaller scales, the fixed disk star is on the left side (fulcrum) of the weighing system, that is, on one side of the weighing rod. For a steelyard with or without a large scale, the scale star is on the right side of the scale system, that is, the scale side.

The steelyard is equivalent to a lever, and the knob is equivalent to the fulcrum of the lever. The weight of the weighing pan and the objects in the weighing pan are balanced by the weight of different positions of the weighing beam, and there is a linear relationship between them. It can be explained by the formula: the weight of the scale and the objects inside is G 1, the distance from the lifting button is L 1, the weight of the weight is G2, and the distance from the lifting button is L2, so there is a relationship of G 1*L 1=G2*L2.

G℉NCèng is a kind of scale, and it is a simple weighing instrument that uses lever principle to weigh mass. It consists of a wooden weighing beam with weighing stars, a metal weighing hammer and a hanging rope. Stefanie is a miniature scale, which is specially used to weigh gold, silver and precious Chinese herbal medicines.