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/mEkAaJWhmm
— Graham Stoakes MIMI (@gstoakes) April 4, 2018
http://twitter.com/gstoakes/status/981562562969001984 by gstoakes