I don't recall ever seeing one like that. The cutout relay adjusting screw has a left hand thread, so "clockwise" increases the setting, just like the voltage and current regulator screws. Ford and MOPAR regulators usually had the "bend the tab" type adjustments. Either one works OK, as long as the guy with the pliers is careful with his spring tension tweaking.

There are places inside all regulators where carelessly creating a short with an adjusting tool will result in an instantaneous "smoke test"!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!