GRASS Instrument Telefactor SQUARE PULSE SD9 STIMULATOR MODEL SD9 Missing 1 Knob

Vintage Grass Medical Instruments S4G Pulse Stimulator 115v Used Works

David Kopf Instruments Stereotaxic Electrode Manipulator | XYZ

GRASS Medical Instruments S4KR Stimulator

Grass Instruments S88 Square Pulse Stimulator - Partially Tested - working

David Kopf Instruments Stereotaxic Electrode Manipulator | XYZ

Vintage GRASS S88 Stimulator

Disposable Concentric Needle Electrode Wire Stimulator for CMS6600 EMG/EP System