
Yeah I got a couple of a 510 connectors for the top of the tank-o-meter, to check voltage underload.
So you could battle your friends on who has the lowest voltage drop!

I'll get to it one day.
I was thinking of getting this Voltmeter then I'll be using this Carto Tank. Is the tank similar to the tank you used? Also, where did you cut the notches?
Width wise, the fast tech voltmeter will fit the tank; the voltmeter is 15 mm wide, and the tank is 20 mm wide. The length is what concerns me. The voltmeter is 31 mm long, and the carto-tank is 73.6 mm long. However, I don't know if that 73.6 mm includes the drip tip and 510 connection that is protruding from the bottom of the tank.
Question: Which female 510 connect would I need from 510 Connectors, 510 E-Cig Connectors, 510 Connector | MadVapes
Would it be the large hole one or the sealed one?