the only issue i found with it is that it supports 5mv per division as maximum, not 1mv. so can i solve this by getting a x10 probe or amplifier of some sort?
Please understand that a "X10" probe divides the signal, not the other way around, so you'll end up with 1V indicated if you have an actual signal that's 10V if measured with a DMM or similar.
I know it divides the signal, maybe I wrote the wrong words in my post.
However, isn't there an amplifier probe or little product to address such issue? I mean I can hook an op-amp circuit to do so but this probably won't be that professional and accurate.
I am more interested now about the scope itself... I hope someone tried it before.
To amplify the signal, you will pretty much have to duplicate the normal analog input circuitry of your Oscilloscope.
A "clever trick" is often done with those models of multichannel analog 'scope where the vertical output of one of the channels is available at the rear of the instrument.
The signal is applied to channel (1) & the output of that channel to the second channel, giving more gain, & hence, the ability to see smaller signals.
Even this has limitations, though, chiefly increased noise on the resultant display.
This may also be a problem with an external amp, either professionally made, or "homebrew".
A possible alternative to a preamplifier is to observe the signal at 5mv/div, then save it to your PC.
It should be possible, using the PC software to create a "virtual" 1mv/div scale on that device's large screen.
Such a display would still be limited by the resolution of the original ADC, &, of course, is not "real time", but may solve your problem.