I have three Tektronix TM503 power modules (similar to the one pictured below) for sale. They'll accept most TM-500 series plugins except for those which require a "high power" compartment - such as an SC504 scope or a PS505 power supply.

Combine a TM503 with a suitable counter plugin (DC501/502/503/504, etc), a DMM plugin (DM501/501A, DM502/DM502A, etc), a power supply plugin (PS-501/501-1/501-2/503/503A) and possibly a signal generator (SG502) or oscilloscope (SC502) plugin and you've got a very small, flexible test bench at your fingertips.

Asking $60 shipped for each. In the coming weeks I'll be listing excess-to-my-needs plugins as I get them checked out. If anyone reading this wants pictures of the units I have for sale, let me know.

You may also reach me at my call at neo dot rr dot com if not a site member.

m_24961_26.jpg