knowledge matrix on Instagram: "A creator showcases a simple yet highly accurate trick to crack a digit lock. He slips a thin paper strip next to each rotating wheel and gently moves it until he senses the exact spot where the strip falls into the groove. That tiny drop signals the correct number, and by repeating this for every wheel, he uncovers the entire code with surprising precision. Credit: mikeshaketv #mechanicaldesign #engineeringbasics #lockmechanics #techinsights #everydayengineering"