I have added somthing else to my collection, and would like some info or a manual/schematic for a "SPRAGUE TEL-OHMIKE (model TO-4) cap, resistor tester (with an eye tube). If any one can help me please let me know. Thank you, Dennis.

Also still looking for a "Simpson # 383 cap tester info, It's not the same as a 383A.

I am also looking for the data and schematic for sprgue TO4. I just got my unit but dont know if it is working properly.