发明名称 Image section measuring device - has grid markings parallel to two perpendicular edges of transparent plate placed over image
摘要 The image section measuring device uses a transparent plate (1) which is placed over the image and which is marked with a 2-dimensional grid raster pref comprising fine mm lines (2,4) and heavy cm lines (3,5). The plate has 2 perpendicular edges with at least one edge used to guide a cutting tool. The grid raster may be printed on the underside of the plate (1) or etched in the surface of the plate (1). The mm and cm grid lines (2,4;3,5) may be differently coloured. ADVANTAGE - Precise cutting out of required image section.
申请公布号 CH673108(A5) 申请公布日期 1990.02.15
申请号 CH19870001240 申请日期 1987.04.01
申请人 ERICH PEROTKA 发明人 PEROTKA, ERICH
分类号 B26D7/28;B26F1/38 主分类号 B26D7/28
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