Audio Oscillator - Advance
This is a Type H-1 Oscillator - the manual is in my Technical Data section. It is rated to give 15 - 50,000 c/s at constant voltage with a distortion of less than 1 percent. It is in fairly good cosmetic condition. I have not checked its workings, but will do so if you are interested... If there is the need to replace caps etc, then the cost of the components will be added - or it may be a fun project for you!