The VLRH (Very Low Rubber Hardness) testing scale is unique to the DigiTest II system. It follows the DIN ISO 27588 principle and is typically used for thin sponge-like material including: sponge- and foam rubber, cellular rubber, silicone, etc. The primary differences between the scales is that the VLRH can do indentations on thinner specimens of 2mm. It is kind of like a Micro Test Head for Shore 00 and 000, except that it offers added versatility of being able to test on concave and convex surfaces.

The measuring ranges are comparable based on their corresponding standards ASTM D2240 (Shore 00/000) and DIN ISO 27588 (VLRH).