This listing is for a really cool old medical device called Renulife Violet Ray Generator. This is the model F version. It looks to be in great shape. This would be a great addition to your collection.Here is some information I found from the manufacturer.
-This instrument is slightly stronger than the Model E arid is built in a self-contained carrying case, seal-grainkeratol covered, velvet lined, with electrode clips in lid for carrying three electrodes. There are no exposed metalparts on instrument. It is a most convenient outfit for carrying about; handsome and efficient, size of case when closed 10\" x 4 ½\" x7\". Regularly equipped with No. 1 General Surface Electrode and No. 3 Metal Saturator Electrode.Feel free to contact me with any questions.

---