Original Publication Date: 2001-Dec-30
Included in the Prior Art Database: 2003-Jun-18
Two-dimensional coordinates are often used to measure positions of application forms. To make a mark at 19.5cm from the top and 16.3cm from the left on a form, we usually have to use a ruler twice. However, by using the two-dimensional ruler, we can get two- dimensional coordinates with one-time-operation. This disclosure shows how the above idea is resolved. Transparent plastic templates ruled in squares (like a cross-section paper) are used for these purposes. However the ruled lines on them are not accurate enough because the main purpose of them is not to measure precisely. If there are many cross-sectional lines, in addition, it is difficult to identify each line. It is possible to get two-dimensional coordinates at once by using drafting machines, but they are so expensive and are not portable. The two-dimensional ruler is aiming for easing restrictions of plastic templates. Every ruled line is, therefore, accurate enough and easily viewable.