The device can measure the oscillator frequency when the resonance occurs, get the magnetic induction based on the Larmor precession formula, and display it by the Liquid Crystal Display (.

• 通过对共振点处边缘振荡器的振荡频率进行测量,由单片机根据拉莫进动公式计算出磁感应强度,送液晶显示器输出。