The mechanism is used to determine the product sin(α)*cos(β). When cam 1 is turned about fixed axis C-C through angle α, follower 2 is displaced a distance proportional to sin(α), and channel member 3, turning about axis B of roller a, displaces slide 4, connected to member 3 by a pivot at point A, a distance proportional to sin(α). When cam 5 is turned about fixed axis D-D through angle β, follower 6 is displaced a distance proportional to cos(β), and roller a, carried by follower 6, rolls along the groove of member 3. At this, member 3 is moved parallel to itself, displacing slide 4 a distance proportional to cos(β). When both cams, 1 and 5, are turned, slide 4 is displaced in one of the directions shown by the arrows a distance proportional to the product sin(α)*cos(β).
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