公开(公告)号：US3760506A

公开(公告)日：1973-09-25

申请号：US3760506D

申请日：1971-11-19

Applicant: INT COMPUTERS LTD

Inventor： TUDBERRY R

IPC: G06K5/04 ,  G01B5/16

CPC classification number: G06K5/04

Abstract: A punched card gauge has at each possible hole position marks defining at least two boundaries one within the other. Sight of the inner boundary but none of the outer one is required on making a hole sight of the whole of the inner boundary indicates a hole is satisfactory for sensing.

Abstract translation: 冲孔卡片在每个可能的孔位置上标记在另一个内限定至少两个边界。 内部边界的视线，但是对于整个内部边界进行孔眼观察所需要的外部视野都不需要，这表示孔对于感测是令人满意的。