Down at the local pub, die-hard Brexiters will be raising a pint to news that the United Kingdom is eyeing the end of a European Union-inspired ban on selling products in only pounds and ounces. But many others view the move away from the world-standard metric system as pure rubbish. Since becoming prime minister, Boris Johnson has pledged to usher in an era of "tolerance towards traditional measurements." On Thursday, Brexit minister David Frost clarified what that means — giving shops and supermarkets the option to sell items labeled only in imperial units. Under the plan, market stalls and shops...