Measuring a capacitor's Equivalent Series Resistance (ESR) is a great indicator of capacitor condition. This ESR70 Gold version is an improved version of the Peak Atlas ESR Plus. It does everything the Plus version did but does it better. The Atlas ESR70 offers instant results, just connect the probes and press test. Using the supplied gold-plated probes (removable), the Atlas ESR70 Gold can measure ESR down to 0.01 ohms. The meter also includes an audible alert for capacitor testing.