Viscosity Cup (Black)
A viscosity-cup is used for testing the viscosity of your paint; in order to achieve the proper thinning ratio. Mainly used with HVLP and Power Sprayer units, but could be used with any paint spray gun.
Q. What is the Din size of the cup?
A. It is very close to the DIN #4 cup, but it is not an exact "DIN 4".