Matsunaga SD-1310 Variac 0-130V Slide Regulator, Fully Restored. See Video!
Matsunaga SD-1310 Variac – referred to by the manufacturer as a ‘Slide Regulator’. Manufactured in Japan, the SD-1310 is rated for 1-phase, 100V input with an output of 1-phase, 0~130V, frequency of 50/60Hz, rated for 8-hours.