Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC CorpfiledCriticalNEC Corp
Priority to JP23769187ApriorityCriticalpatent/JPS6478890A/en
Publication of JPS6478890ApublicationCriticalpatent/JPS6478890A/en
PURPOSE: To easily and precisely draw a chart, a graph or the like by mounting rulers on a white board having a copy function, without using other rulers. CONSTITUTION: A white board face 1 can be totally copied in a copying part 3 by writing the letters, chart or the like on the white board face 1 and operating an operating part 2. When the straight lines are drawn to create the chart, the straight lines can be drawn by moving a vertical ruler 4 and a horizontal ruler 5 to the arbitrary positions.