本片是一部德国纪录片片，由萨莎·利特文采娃导演，由主演。
剧情简介："Constant is a journey through the social and political histories of measurement. The film explores three shifts in the history of measurement standardization, from the land surveying that drove Early Modern European land privatization, to the French Revolution that drove the Metric Revolution, to the conceptual dematerialisation of measurement in the contemporary era of Big Science. Each chapter traces the relationship of measurement standardization to ideas of egalitarianism, agency, justice, and power.” (Sasha Litvintseva & Beny Wagner)
外文名：Constant
类型：纪录片 / 短片
地区：德国 / 英国
导演：萨莎·利特文采娃 / 贝尼·瓦格纳
