British law has long dictated that pubs sell beer and cider only in an imperial pint(above),which is about 20 percent lager than a U.S pint,or in glasses one-third or one-half that size.But this year Parliament is set to scrap several restrictions on weights and measures to encourage innovation.This would legalize a two-thirds pint-an amount some are calling a schooner based on a similar-size Australian pour.