If you can build one of those, you can build a Helix Seriously... It was not that complex. The instructions are extremely well laid out and everything is very clearly marked and bagged. The kits are very modular in assembly, so you're working on small sections of the boards. The assembly manual is about 1/4" thick if that gives you an idea of how foolproof they tried to make it. The complex part is the calibration... I first built a DMM and calibrated that against the school's Simpson, then borrowed the school's signal generator and used both to calibrate the scope. I'm sure it's long gone out of calibration after 40+ years, but it's fine for empirical measurements... do I have signal or do I not? Is this signal bigger or smaller than that one? Is the polarity reversed? The last time I used it was probably about 15 years ago on a problem with a traffic signal controller. Funny thing is, my buddy's dad built a Heathkit color TV. After he completed it, he took it to the Heath store in Anaheim to have it aligned. The staff was floored... they said that his was the first they had ever seen successfully completed without multiple trips into the store.