Here is an interesting looking incandesant light bulb.  This is a 40 watt bulb with a hex shape.  It lights up.

Here is a nice working 6 volt battery charger for your 1920s 3 dialer radio.  This unit was manufactured by the Interstate Electric Company, St.Louis,MO.  It is in good working condition.  It is pretty heavy but not very big.  It measures about 6" X 9" X 8".

Here is a handy little transistor checker for your repair bench.  This is a Seco model 100 dynamic transistor checker.  It is untested but it is complete and looks to be in good condition.  The instructions are printed on the backside.  It measurs about 4" X 7" X 3".

Here is another Sterling tube tester from the early 1930s.  This is their model 407.  This unit looks like it tests 4 pin tubes like the 201A and 199 and other tubes of the 1920s battery radios.  It is untested but looks to be in good condition.  On the back side is a set of instructions.  It measures about 9" X 7" X 3".

Here is an interesting looking tube tester from the early 1930s.  This is a Sterling home tube tester, model R-411.  It looks like it tests 4 pin tubes like the 201A and 199s.  It is in good condition and should work.  There are no instructions so you may have to find them on the internet.  It measures about 3" X 6" X 2".

Here is a nice working Heathkit model AO-1 signal generator.  This item sold new in 1953.  It has been cleaned and repaired and it is now ready to put into service.  If you work with old radios or audio equipment then this is a tool you need to have on your work bench.  It measures about 13" X 8" X 8".

Here is a nice working Heathkit RF signal generator from 1954.  This is their model SG-8.  This item is in good working condition.  It has been cleaned and repaired.  If you do any repair work on radios this is a nice piece of equipment to have on the bench.  It measures about 10" X 8" X 6".

Here is a handy little device for testing your rig.  This is a Micronta brand model 21-525B.  It is in like new condition.

This is a Superior brand model TV-50 RF signal generator.  I think this model is from the mid 1950s.  It is in good working condition.  Good cable also.  It is ready to set up on your repair bench and use.  It measures about 13" X 10" X 7".

Here is a handy little piece of test equipment for checking the health of  transistors and diodes.  This is a Sencore model TR-C4.  This is a small unit that coud easily fit in your toolbox or on your repair bench.  It comes with the instruction manual clipped to the back side of the checker.  It measures about 5" X 3" X 6".