Electronic Measuring Instruments DDS. The special construction makes it the prefer-red wrench for workshop. Controlling of min-and max- torque values with LED´s. Internal memory for 50 values and RS232 interface for Printer or PC. Indication scale: 0,1 Nm, Accuracy: + - 4%, Dimensions: 28 x 28 x 335 mm Model: DDS-1 Input Drive: 9 x 12 mm Working range: 2 - 100 Nm Weight: 630 g catalogue part no.: DDS-1P By using special-sockets or special tools a corrected setting must be calculated for the used torque wrench.