This device is located in the chemistry laboratory which measures the color resistance againt the hit.

The device includes a palce to put the plate, pipe, the weight shooter, 9.15mm penetration making device,

and a 2-kilogram weights.

The following description shows how the device works:

First, we put the painted plate in the specified place.

Then we press the the releasing button, the weight is dropped from a one-meter height and falls to the

 surface of the plate.

Next we take out the sapmle plate from the device and analyse the place of hit to make sure that there is no

 sign of crack .