The part 013-0155-00(01) is a multiple opamp test card for the Tektronix 178 Linear IC Test Fixture, which is a front-end plug-in for the 177 curve tracer.
It performs the same functions as the standard single opamp test card, but allows patching up and selecting up to four opamps which are contained in a single package. The DUT plugs into an adapter socket such that several different package configurations are supported: dual-in-line, TO-5, ...
The manual illustrates its use with a LM324 and LM3900. The latter device is also called a Norton amp. Instead of differencing the input voltages as in conventional opamps, it differences its input currents. This would make a nice example to analyze with the General Feedback Theorem; maybe later. Note that these devices operate on a different principle to current feedback opamps: the latter do not difference the current into their inputs.
I have scanned the users manual.
The LM301 opamp at the top-left is used to increase the loop gain by 40 dB to reduce the static error for various measurements. It can be switch in or out.
Patch cables complete the wiring between the card and the DUT. The black pots set the current limit for the positive and negative supply.