The assembled meter measures (roughly) 84mm (L) x 38mm (W) x 28mm (H). There is, however, a metal tab that holds the LCD to the PCB that doesn't sit too well with the connection terminals, which actually didn't come with the original kit but I thought they would make connections easier. See the attached picture. That makes the meter a bit thicker on one side than the other. That should be fixable by either removing the tab or not using the connection terminals.
I have also included a few pictures of the meter taking some measurements. I powered the meter with 3 AA size batteries (so not exactly 5V). The input is connected to a power supply. Output is connected to an electronic DC load (the Maynuo M9712 Martin reviewed). Multimeter (Brymen BM-521) is connected to the output (load) end.
I tested the meter at about 2V/100mA, 5V/500mA and 20V/3A (my power supply can only do up to 20V). There is some voltage drop in the leads between the power supply and the meter, as well as between the meter and the DC load. But as you can see in the pictures, the voltage readings of the meter and the Brymen are pretty close. The current readings on the meter and the DC load aren't very far off either across the range.
Hope this helps.
HI Franky!
Could you please post the size of the assembled meter? I'd like to know roughly how much space (length, height, depth) it needs.
Also, do you have any info about the resolution and the accuracy? Maybe a photo while the meter is turned on and taking a measurement?