This is a vintage DeVry Automotive Electricity Trainer part number 22000 made in Chicago.  Its 120v AC 120 Watts.  Everything fits in the carrying case in the second picture.  The case is approximately 17 1/2" wide,  11" high, and 9" deep (as viewed in picture 2).  This trainer came from a local high school that had a massive sale where they sold forty years of items stored in the warehouse.

Picture 4 is of a Low Voltage Power Supply.  It has an electrical cord coming out of the back.  On a plate on the back it says, "Low Voltage DeVry Power Supply, part no. 22007, all outputs overload protected above 6A, Max DC Outputs, Hi - 17.6V, Lo 8.8V, Max AC Outputs Hi - 14.4V, Lo - 7.8V."  I plugged it in and the power light came on.  It has a carrying handle on the top.  It is approximately 7 3/4" long, 5 1/2" high, and 5" deep.

Picture 5 is an Automotive Analyzer according to the front of the machine.  It says it is a Transistorized Meter.  It has a knob on the top right for 4 cyl, 6 cyl, 8 cyl, and P/Min.  The bottom knob says, "Off, RPM, Dwell, V-A, Ohms, and Meter Adjust".  The meter itself has scales for Volts and Amps and Dwell and RPM.  On top of the machine a plates says, "This instrument is equipped with Automatic Battery Economiser.  Removal of external leads from jacks disconnects internal battery supply.  I did not open this unit up.  If it has a battery inside it may or may not be corroded.  This unit has a set of leads that store in a small slot to the right of the drawer (seen in picture 1).

Picture 1 shows a drawer that pulls out to reveal a bunch of training items for lack of a better word.  There are two circuit board mockups in picture 7.  These mockups are labeled for all the items sitting in front of them in pictures 6,7, and 8.  All of these items fit onto the circuit boards.  The set of four spark plugs is neat looking.  I have now exhausted my knowledge.  I do not understand electrical items.  You are bidding on what you see in the pictures.  I don't know if it works or how it should work if it does work.  Use the mouse over feature to look at everything.  I took the knob off the drawer to make getting the larger circuit board schematic out of the drawer.  This thing is heavy.

Thanks for looking...