COMBINED RULER PROTRACTOR

Abstract: A combined ruler protractor (13) which allows easy drawing of inclined lines and/or measuring angles using a transparent scale. The starting point of very inclined line of the protractor coincides with the starting point of a scale line of the linear scale (12, 12') on the edge (11, 11') of the ruler (13). The scale lines of the protractor are setting steps of one degree, growing from 0 to 90 degrees; every 10-degree-line (1, 2, 3, 3', 4, 5, 6, 7, 8, 9) being specially marked.

Description: COMBINED RULER PROTRACTOR Technical Field This invention relates to a length scale unit with angle lines which are marked and formed straightening angle lines onto transpa¬ rent that unit, and, more particularly, to a noble length scale unit which is easily and conveniently to draw angular lines and to measures an angle by only unit of a length scale being combined with a protractor function at the length scale. In the prior Art In the prior Art, a length scale and a protractor have been used each other independently unit. The function of length scale has been us-ed to draw the strai¬ ght • lines or to measure a distance between the straight lines A and B, Also, the protractor has been used to measure an angle between two lines. By the way, general users have been used independently length scale unit or protractor, when they want to know angle of two lines in each other acrossing or they draw an angular lines on a gained one straight line. For example, when it starts to draw angular lines by means of the length scale. It must be pointed a dot on a drawing straight line using a protractor's angular lines, and a length scale unit will be fixed or arranged at this dot, then, an angular line is to draw by means of the length scale unit. In the absence of such a procedure, general users shall be recognized that it is not easy to draw an angular line or to measure an angle, as their units are separated in independent unit. Suπmary of the invention The object of the invention is to provide a length scale having a protractor function, to use with all length scale and protractor by only one unit of the transparent length scale, or to use only a length scale which draws or measures a length of a straight line, or to use only a protractor function which measures an angle or draws directly angular straight line. In order to achieve said object, according to the present invention, this is provided a structure coπprising at least, one and more than angle lines of a proportional dividing line which starts to marking an initial line point contacting at a using line of a drawing straight line, in mili, centimeter point lines on the lenght scale unit. The above and features of the invention will appear moire fully hereinafter frαn a consideration of the following description taken in connection with the accompanying drawing herein a preferred embodiment will be illustrated by way of example. Brief Description of the Drawing Fig. 1 is a top plan view of this invention. Fig. 2 is a perspective view of this invention. Detailed Description of the Preferred ___πbodiment Ref erring to Figs. , the angular ]__Lnes of a scale unit (13) mark strai tening angle line which starts to initial lines point of 1 point lines (12)/12') contacting at using lines(ll)(ll'). This said angular lines are to be marked with angle lines as the base of a using lines (llXll') Frαn 0° to 90° in per 1° at starting point (_? . 5 And angle lines (1),(2),(3),(3'),(4),(5),(6),(7),(3),(9) of all angle lines mean that they are frαn 10° to 90° in per 10°in regular seguence. But, these lines' opposite direction also is able to be used at the 90" to ISO 0 angle lines. "L Q For example only an angle line (6), users will show that it will be drawn with angular line by using angle line(6). One obtained angle between the said angle line (6) and using line(H') is 60° to downwards the scale unit(13) at Fig position- But, that the other angle is 120°in upwards the scale unit(13). 1 m If it will be drawn two each straight lines being 5cm lines in a distance between the straight lines A and B, and will be for¬ med at an angle of Θf hι these lines mitting point, it will be to draw one straight line of 5cm in length at contacting point of using line(11') with a using of the point line(12). 20 Then, that line is to be used at straight line being an arranging or a contacting point of an angle line (6) on the scale uτ_iτ_(13). Next, the second procedure is to draw a line of 5cm length to downwards at the contacting point of the using line (11') and angle 25 line(ό), or it will be drawn an angular line of the 120°to upwards at the mitting point of the two straight lines. Consequently, this scale unit of the invention is able to use two side direction angle lines as only one angle line (6) and said unit has a function that is able to draw angular lines by using angle lines of 10" to 90° at one side direction, but to draw angular lines by using angle lines of 90° to 1≤0° at that counter direction. Further, this described invention provides that angular lines are able to draw directly straight lines to the point lines (12)(12') with a measuring angular line, at using lines (11)(11'). But it is to draw angular lines with using all of straightening angle's protractor and length scale, or with dnly using staighten- ing protractor, or with only using length scale. The described invention provide that it is very easily or conveniently to draw angular lines, or to measures angle by only a length scale unit which is marked with straightening angle lines as a.protractor.

Claims: CLAIM A transparent length scale unit coirprising plurality angle line of the length scale unit(13), said angle line marks to starting an initial line point of point lines (12)(12') contacting with an using line (11)(.11') being drawing straight lines, and is formed in structure with all angle lines and angle lines (1),(2),(3),(3'), (4),(5),(6),(7),($),(9) as the basis of a using line (11)(11'), from 0° to 90°, in per 1° , in starting point at 0° .

Inventors: YUN EUN HAN, YUN, EUN, HAN
Applicants: YUN EUN HAN, YUN, EUN, HAN
Application year: 1985
Main classification: B43L7
IPC codes: B43L7