What is the minimum range of a steelyard?

1. An ordinary steelyard, with a maximum range of 20 kg, has two rows of scales on its rod body, two hanging ropes at one end of the weighing hook, and its weight is 1 kg.

2. The rod scale uses the lever principle, and the rope near the weighing hook can weigh larger objects, while the rope on the left has a smaller range.

3. The maximum range of the small lifting rope is 5 kg. 1 and 2 are divided into 10 cells, so the minimum unit is 1.

The range of large lifting ropes, with a maximum of 20kg, is divided into 10 between 5 and 10, so the minimum unit is 5 Liang.

Handmade technology of traditional scales;

(1) Selection of beam materials: Nanmu is generally used for large-scale scales, and "Populus davidiana" produced on the central slope of Qinba Mountain area is mostly used for small-scale scales. If the wood is dried in the shade for more than one year, it should be sawed to a suitable length according to the weighing requirements of the scale to be made.

⑵ Planing the balance beam: firstly, use the positive planer to plan the circle according to the craftsman's experience, and then use the reverse planer to clean the burr and polish the balance beam preliminarily.