The physical balance meter is a high-precision, mechanical double disc equal arm balance designed specifically for routine quality measurement in teaching, laboratory, and industrial fields. It utilizes the traditional lever balance principle to quickly obtain stable readings with a resolution of 0.01 g without the need for a power supply, making it an ideal complementary tool for electronic scales. Application scenario: High school/university physics and chemistry experimental courses - demonstrating the principle of leverage and quality measurement; Quality Inspection and Metrology Room - Quickly review electronic balance results to avoid electromagnetic interference; Jewelry, medicinal herbs, powder metallurgy - on-site small batch precision proportioning; Outdoor/no power environment - field geological sampling, emergency quality testing.