VintageSG - thanx for the link - I saw your part on ebay but had thought you were referring to a breakout of multiple pins. As a general comment, safety is quite a concern if using that style of breakout in a plate current measurement setup, as I doubt the wire insulation and 4mm plugs are rated for plate voltage levels, and the meter itself needs to be of a certain capability. With respect to the Eurotubes Pro One, do you know if the LCD meters have an extra clear cover over the LCD's own front cover? As far as I can tell, the internal circuitry and meters would be sitting at plate voltage, as they appear to be directly measuring plate current. So I am a little skeptical about the safety rating if there is just the LCD module thin glass cover sheet providing isolation.