For determining the scratch hardness of ready mixed paints and enamels, which is the minimum load required to produce a scratch showing the bare metal surface of the painted panel. The apparatus consists of a 1mm dia hemispherical stainless steel needle, fixed to a platform of a counter- balanced rod, which is assembled on a grooved platform. A rack moves through the groove, to which a painted panel can be clamped. An indicator lamp is provided to indicate the metal contact if the Needle penetrates the paint surface to make contact with the metal. Complete with 1 kg weight. Suitable for operation of 230 V, 50 Hz, single phase, AC supply.

For determining the scratch hardness of ready mixed paints and enamels, which is the minimum load required to produce a scratch showing the bare metal surface of the painted panel. The apparatus consists of a 1mm dia hemispherical stainless steel needle, fixed to a platform of a counter- balanced rod, which is assembled on a grooved platform. A rack moves through the groove, to which a painted panel can be clamped. An indicator lamp is provided to indicate the metal contact if the Needle penetrates the paint surface to make contact with the metal. Complete with 1 kg weight. Suitable for operation of 230 V, 50 Hz, single phase, AC supply.