What traditional skills impressed you?

Weighing technology is word of mouth. Making a scale is an exquisite craft. The most important process is nailing the scale, including selecting materials, planing, soaking in alkaline water, polishing and nailing the scale. First, draw a straight line from the front end to the rear end of the scale, then drill a small hole in the straight line according to the standards stipulated by the measurement department, insert the soft lead wire into the hole, and cut the lead wire with a special "quick knife" for nailing the scale. Then,