I am working on a small project and having those values shown in real time on the device will be helpful. I don't have much room as it is. I currently have one of those little 1s-6s volt meters used by RC hobbyist and use my multimeter to check resistance. My goal is to have something around that size, but show all three values. I have experience, but unfortunately it was mostly just having my boss hand me a schematic and a pile of parts. A couple of engineer friends helped me some with theory but not much practically. They are Nuclear engineers. One of them frequents this website regularly and suggested you guys/gals for this. I was hoping for an off the shelf part, but hours of searching came up with nothing. Some specifics; The power is coming from two IMR LI ON 3.7 volt high drain batteries in series. A buck converter with a 20 amp/ 120 watt limit. The output voltage range is 3.3ish up to 6 volts. The variable resistance will have a low end of .3 ohms and an upper limit of about 1 ohm. I know it's possible because I have seen it exactly in another device. I thought about cannibalizing it for the display, but it would cost about 100$ for a small piece of circuit and a tiny oled screen. Furthermore that's not a real solution.