$50 · TOOLTOP ET120MC2 Dual-Channel Mini Digital Oscilloscope 120MHz

Small battery operated oscilloscope. Also has a built in signal generator. I bought this earlier this year but didn't use it much until December. It seems to do the basics so if you just need cheap and simple, then this is the unit for you! Includes everything in the image. NOTE: the reason I am selling it is because it is useless as a "two channel" scope because the two waveforms are NOT aligned in time. I'm not exactly sure what they were thinking when they dreamed that one up! Anyway, it's still OK as a one channel scope :-)