The Mysterious Combination Lock

A lighthearted explanation of how a typical drop-lever combination lock works

• #education
• #combination
• #combination_lock
• #6730
• #dialing_a_lock
• #sargent_greenleaf
• #mechanical_lock
• #safe_lock
• #wheel_pack
• #drive_cam
• #dialing_sequence
• #brian_costley