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/31wrH09Xgv
— Graham Stoakes MIMI (@gstoakes) January 21, 2018
http://twitter.com/gstoakes/status/955050351941574656 by gstoakes