Lever 2 turns about fixed axis B. The handle with circular eccentric cam 1 turns about fixed axis A and the cam slides along head a of screw 5. Workpiece 3 is clamped by lever 2 when handle 1 is turned clockwise. Spring 4 returns lever 2 to its initial position when eccentric cam 1 is released. The clamp is adjusted by screw 5.
$225$SL,GC$