Easy as 1 2 3 ☝️ Here’s a quick tutorial on how to play ruffs on the castanet machine with a “rolling fingers” technique. We’re playing this on one of our Overture Castanet Machines. The tension adjustment knob allows the distance between the cups to be fine tuned–very helpful when you want to find the sweet spot for achieving this roll. This triplet could be referred to as a triple “Glope’” and adding an additional note to this triplet would make it a “Caretilla” or a 4-stroke-ruff if you will.

Released decades before GPS, the Casio MAP-100 used a tiny rolling gear attached to a swing-out arm to trace routes directly on paper maps, converting rotations into distance readings. Users could set the correct map scale, and the watch automatically calculated and displayed the real-world distance in miles or kilometers through its digital screen. This clever blend of mechanical precision and digital computation made it one of the earliest wearable navigation tools, showing how innovation thri