Heathkit SO-4235 DUAL TRACE DELAYED SWEEP OSCILLOSCOPE, Original Envelope, 1984
Heathkit SO-4235 DUAL TRACE DELAYED SWEEP OSCILLOSCOPE, Original Envelope, 1984 Postmarked Oct 19, 1984 Master Builder Please ask any questions you may have before purchasing. I am happy to help. Will be shipped media mail. Happy Shopping!