The oscillations of scales, secured to cylinder 2, are damped in the travel of piston 1 which has a number of holes a for the flow of fluid from one end of the cylinder to the other. By setting piston 1, using nut 5, at various distances from disk 3 to vary the clearance between the edges of the piston and disk, the degree of damping of scale oscillation can be changed. Disk 3 is mounted rigidly on rod 4.
$3643$SHP,DC$