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/tyxgQ72L4t
— Graham Stoakes MIMI (@gstoakes) October 27, 2017
http://twitter.com/gstoakes/status/923942974974722049 by gstoakes