- SR830 Stanford Research Lock In AmplifierCondition: UsedFrequency: 102 kHz
- SR620 Stanford Research Frequency CounterCondition: UsedFrequency: 1.3 GHz
- SR560 Stanford Research PreamplifierCondition: UsedFrequency: 1 MHz
- SR570 Stanford Research PreamplifierCondition: UsedFrequency: 100 Hz
- SR850 Stanford Research Lock In AmplifierCondition: UsedFrequency: 102 kHz
- SR530 Stanford Research Lock In AmplifierCondition: UsedFrequency: 100 kHz
- SR510 Stanford Research Lock In AmplifierCondition: UsedFrequency: 100 kHz
- SR650 Stanford Research FilterCondition: UsedType: Variable
- SR445 Stanford Research PreamplifierCondition: UsedFrequency: 300 Hz
- SR550 Stanford Research PreamplifierCondition: UsedFrequency: 100 Hz