TIS 166-2549 Figure A.10 Gauge for testing minimum withdrawal force of current-carrying pole for flat-round pin socket-outlet

TIS 166-2549 Figure A.10  Gauge for testing minimum withdrawal force of current-carrying pole for flat-round pin socket-outlet

TIS 166-2549
Thai Industrial Standard for PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD AND SIMILAR
PURPOSES : PLUGS AND SOCKET-OUTLETS WITH RATED VOLTAGE NOT EXCEEDING 250 V