Do you own an #oscilloscope and want to know what the #waveforms mean? Check out graham https://t.co/eMLWrzXJYL for more info. #diagnostics http://pic.twitter.com/zLgodGl8Ev
— Graham Stoakes MIMI (@gstoakes) November 26, 2017
http://twitter.com/gstoakes/status/934845727137779717 by gstoakes