Linkage for Double and Triple Angles 22 January 2018, 21:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! This linkage ensures following angle relations at any position of blue bar: Angle EDB = 2Angle DAB Angle EBC = 3Angle DAB « previous mechanism Toggle Clamp next mechanism » Ratchet Irreversible Lock load comments Please enable JavaScript to view the comments.