Do you own an #oscilloscope and want to know what the #waveforms mean? Check out graham https://t.co/eMLWrAfkQj for more info. #diagnostics http://pic.twitter.com/sAUpmdokd8
— Graham Stoakes MIMI (@gstoakes) September 26, 2017
http://twitter.com/gstoakes/status/912767047334977536 by gstoakes