Vintage Sun Electric Corp Transistor Regulator Tester Model TRT-12, 6 & 12 Volt

Description

Vintage Sun Transistor Regulator Tester. Model TRT-12. Tester looks near new.
Capable of testing both 6 and 12 volt units.
Includes several leads for hooking up different regulators. Also includes instructions for hooking some various regulators.
Tester had been part of surplus equipment from an auto mechanic's school. It does not appear to have been used much. I have not tested it.