This spring-loaded pogo pin clip gives you the flexibility to measure your signals without tying up one of your precious finger support systems.
Holding a multimeter lead or scope probe onto your circuit while taking measurements or adjusting your devices can be difficult, especially if you don't have 3 hands! Luckily, someone had the brilliance to combine a pogo pin with a spring clip to do it for you.
This clip has the strength to stay attached to your PCB, but is gentle enough to not damage any of your delicate circuitry. The pogo pin has a nice round tip to allow of easy connection to most wires/leads of your though hole and surface mount components. Just like the clip, the pogo pin is also springy to allow for adjustment when the clip is being clamped to the PCB.
You could also use this for connecting to batteries, wearables, just about anything where you wish you had a third/fourth/etc hand to hold a probe in place.