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For use with the Heath ES-series analog computer, sometimes called the ES-400 or H-1. This is ES-600 is in very nice condition, but I have no way to know if it actually works. Very clean inside. There is a small dent in top of the cabinet (see photo). Note that this is the same cabinet Heath used for several pieces of test equipment including the AG-9, IM-72, C-3, ID-22, SG-7, SG-8, and T-3, so it would be fairly easy to find a replacement cabinet if you wanted to, though it would require punching a couple of holes. It uses five 6AL5 tubes, and two 0B2 voltage regulators. It will be very carefully packed and shipped fully insured. Note that the computer is not included. I just added the photo to be clear about which computer we’re talking about. Please as any question.
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