A portable, zero threshold desktop level device that can amplify "micro sound, micro vibration, micro force, micro flow" into visible large movements or highlighted indicators within 30 seconds, helping teachers, engineers, and product managers quickly verify the "amplification principle" and its applications. Can demonstrate principles such as lever amplification. Typical application scenario: In the classroom, complete the "micro sound → large swing" experiment in 5 minutes, and students will understand the concept of "amplification" in seconds; Verify the feasibility of the mechanical/hydraulic amplification structure at the front end of the sensor;At the exhibition, ask the audience to manually rotate a 0.1N · cm knob to instantly light up a 2W LED.