Do you own an #oscilloscope and want to know what the #waveforms mean? Check out https://t.co/yQidgkF17s for more info. #diagnostics http://pic.twitter.com/N2dX3wOdz3
— Graham Stoakes MIMI (@gstoakes) December 22, 2017
http://twitter.com/gstoakes/status/944251813385113605 by gstoakes