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/RKJU5wNXhi
— Graham Stoakes MIMI (@gstoakes) January 22, 2018
http://twitter.com/gstoakes/status/955373985411289089 by gstoakes