Right about the scope. Can't remember the model; it was dual trace, think maybe 565 (I remember it was 3 digits). The system occupied 180K Sq.Ft. 32 racks of logic including peripherals, 18,000 vacuum tubes, plus 6000 pencil tubes in the output converter, 130 tons of A/C, 60 miles of coax connecting the racks (under the floor). If an air conditioner failed in one rack and the alarm didn't work (happened!) the envelop on all the tubes would melt. Looked like a Dali come to life. The core memory stack was about 4 feet high and 1 foot square. Held 16K. The 10 tape drives held 20" diameter reels of 3" wide tape. Looked about the size of automobile wheels. The whole enchilada had a throughput capability that might match a low end PC. We've come a long way!