This is an electronic ruler by designer Shay Shafranek that has the form factor of an analog one. What will they think of next?! Affordable jetpacks? I sure hope so.
Press the power/reset button on the ruler and the LEDs light up, waiting for your input. The wooden cover conceals what the pencil in the image above is touching: a line of metal points jutting out from the inner edge of the ruler. The ruler uses the change in voltage induced by touching one of these points to calculate the distance.
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