在暗室裁片操作过程中,常因工作急迫且灯光暗,暗适应不好等原因,看不见片盘上的标尺读数,致裁片歪斜及大小误差或延误时间。我们试用十块长一吋、宽1.5吋、厚0.5吋的小木块接连成活动尺,用于裁片,灵活方便,我们称为活动暗室尺,简称“暗尺”。 连接小木块的方法有二:最简便的方法是将十块小木块并列,底面粘连在一块长10吋,宽15吋的胶布上,然后,在每个小块的四角钉上4枚订书针 In the dark room piece operation, often due to work urgent and dark lights, dark adaptation and other reasons, can not see the film on the scale readings, caused pieces skew and size error or delay time. We try ten pieces of one inch long, 1.5 inches wide and 0.5 inches thick pieces of wood connected into a moving ruler, for pieces, flexible and convenient, we call the activity darkroom ruler, referred to as “dark ruler.” There are two ways to connect the small blocks: the easiest way is to tie ten small blocks together, the bottom is glued to a piece of tape 10 inches long and 15 inches wide, and then four staples are placed on each small square needle