https://iseinc.com/_shop/variabletransformers/variacs-all/1210b-2variabletransformer240vacsinglephaseinput0-240vacoutput12amanualormotoroperated.html
ISE, Inc. Variacs, All 1210B-2 Staco Variac Variable Transformer
Variac / 240VAC Single Phase Input / 0-240VAC Output / 12A / Manual Operated / Open Construction
iseincvariacsstacovariable