TECA

ELECTRONIC GENERATORS FOR TESTING PURPOSES; CATHODE RAY INDICATORS; ELECTRIC CURRENT CONTROL INSTRUMENTS FOR MEASUREMENT AND TESTING PURPOSES, SUCH AS REGULATED D.C. CONTINUOUS CURRENT GENERATORS, REGULATED UNI-DIRECTIONAL CURRENT PULSE GENERATORS; ELECTRODES AND FITTINGS AND ACCESSORIES THEREFOR; RECORDING DEVICES, INCLUDING MAGNETIC TAPE AND PHOTOGRAPHIC CATHODE RAY RECORDERS; AND APPARATUS REGULATING ELECTRIC CURRENTS FOR TESTING PURPOSES