Used for tuning engines with injection systems and specific fault diagnosis. This digital potentiometer V.A.G 1630 simulates testing conditions with resistances between 0.1 and 19.9 kiloohms. Plastic and impact resistant housing, 2 independently switchable decade resistors A and B, Resistance scale between 0.1 and 19.9 kiloohms for each resistor with direct reading, and Max. resistance tolerance: 3% from MV.