Do you own an #oscilloscope and want to know what the #waveforms mean? Check out https://t.co/yQidgkF17s for more info. #diagnostics pic.twitter.com/9fgZLDkwi3
— Graham Stoakes MIMI (@gstoakes) February 18, 2018
http://twitter.com/gstoakes/status/965158457136635904 by gstoakes