The blue ESR meter is pretty famous [1]. [1] https://anatekinstruments.com/products/fully-assembled-anatek-blue-esr-meter-besr https://anatekinstruments.com/pr

The blue ESR meter is pretty famous [1]. [1] https://anatekinstruments.com/products/fully-assembled-anatek-blue-esr-meter-besr https://anatekinstruments.com/products/fully-assembled-anate...