For hundreds of years humans have used the feet, hands and fingers to measure distance. Hence the term “rule of thumb”. Now the old school has gone new school, albeit in a concept form only.
The Smart Finger device fits on the end of any to fingers and by placing them in the same parallel you can measure the distance in between. The distance is determined by calculating the amount of time it takes the beam to reach from one device to the other.
The design calls for a silicon construction, an LED read out and two physical buttons that lets users store measurements, switch between units and calculate volume as well as area.
Sounds great, but I’m pretty sure the laser taper measure is tried and tested.