Low Voltage DC Power Distribution and Measurement Adapter

Some time ago i bought a nice 5V switching mode PSU to have enough power for a raspberry and all stuff in want to connect to it. In another instructable i wrote some time ago, i showed how i like to wire it up to have safe and durable connections - even for my breadboard setups - and do not actually need to really care about them to much any longer. ( You can find this instructable over here if you are curious. ) Well, i even wanted to have some measuring on how many volts my PSU actually delivers and how many ampere all this stuff consumes. For this purpose, i just bought a cheapo led meter which can measure from 0 to 100 volts and from 0 to 10 ampere. Additionally it needs a power supply which can deliver anything between 4.5 and 30 volts.”