Have me an oscilloscope at Ebay bought in order in my electronic circuits measure edges and enumerate the frequency of oscillators. For this they are OK. Who proffesional highend probes is expected wrong here but more than adequate for all basic applications in the "normal" hobby. The switcher of 10: 1 to 1: 1 may have a better switching position. The switch can be moved a little too easily. But as I said, great for the normal hobbyist!