Klingenberg, April 2014. WIKA extends its manufacturer-independent calibration service. The German National Accreditation Body (German abbreviation: DAkkS) has now certified that the company-s test laboratories have the competence to also calibrate electrical measurement parameters in accordance with DIN ISO/IEC 17025:2005. From now on, WIKA has the right to issue DKD/DAkkS certificates for DC voltage (0 V to 100 V), direct current (0 mA to 100 mA) and DC resistance (0 Ω to 10 k]