Manbo Volt Meter - Volt Indicator
A cheap inline volt meter to test voltage drop. Volt Indicator/Volt Meter can be used on 510 devices, not ego threaded.
Manufactured by Manbo Technology.
Must use with a 1.0 ohm load for best results. Will not work with other load resistances, please be sure to always use with a load of 1 ohm only or risk damaging the device.