I got a great deal on this. Super cheap, solid and working. No probes but I jumped the test output to the channel B input and the 1kHz square wave looks good to me. Now I just need to clean some flaky pots and to know what to look for in probes... not to mention how to use one of these.
So many troubleshooting procedures require an oscilloscope, I just had to start sniffing around for a good deal on a decent older unit.