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Yep, thats where I use it. It hangs over the edge, but thats not an issue.
It is quite tall though, so depending on what cup you are using and portafilter, you may have issues.
When used with the standard double spout portafilter, there isn't much room underneath. My flat white cup and espresso cups of choice are fine, but taller ones aren't. It's one of the reasons I'm thinking of going bottomless (oooeeerr).
I have this one - https://www.ebay.co.uk/itm/3kg-0-1g-LCD-Digital-Electronic-Jewelry-Weighing-Home-Coffee-Timer-Scale/372918707150?var=641715258190&hash=item56d3afe3ce:g:vk0AAOSwgiVeIuMh
Not sure i paid more than a £10er for it, but seem to be £15 to £20 now on ebay.
Build quality is poor at best, but its been going for well for a couple of years and still seems fine.
I think having the timer built in is useful as you're only looking at one screen.