educational

This See-Through Combination Lock Unravels The Mystery Of School Lockers

This See-Through Combination Lock Unravels The Mystery Of School Lockers

As you raced through your locker combination four or five times a day during high school, did you ever stop to wonder how those seemingly random rotations actually worked to protect your lunch and textbooks? The lock’s mysterious inner workings were always hidden away under a metal case, but this…