The body
of the instrument contains a round tip, compressed by one of the
three springs corresponding to the three printed scales: 0-300,
0-1000, 0-2000g, and a cursor fitted with a screw lock.
By making
short, straight movements while gradually increasing the load,
the user can observe the force at which the tip leaves a mark
or destroys the coating.
Each Elcometer
3092 is supplied in a case with 0.75mm diameter tungsten carbide
tip and 3 springs.