JPH04178501A - Strap with protractor - Google Patents

Abstract

PURPOSE:To measure any angle through a single rule by a method wherein a strap with a protractor on which importance is attached at a building design site comprises long and short straight rule parts 1 and 2 crossing each other at right angles and a protractor par 3 pointed outwardly of right angles and having a center being an inner intersection point O between straight rule parts 1 and 2. CONSTITUTION:Two long and short straight rule 1 and 2 on which graduations are marked are integrally formed in a state to be crossed each other at a right angles in a bent ruleform manner. A semicircular protractor part 3 is located in a state to point to the outside of an angle as a starting point being an intersection point O between the inner sides of the straight rule parts 1 and 2. At the part 3, graduations are marked such that the extension line of the inner side of the part 1 is extended at 45 deg. or 135 deg.. The parts 1, 2 and 3 are all made of clear resin, and a work is facilitated as an object to be measured is seen through. When this strap is used, an angle is simply obtained in a way that a point B deflected at a given angle alpha with a straight line is obtained on the part 3 from a point A on a straight line and a straight line passing points A and B is drawn on the part 1. When right angles are obtained, this strap may be handled as in an ordinary bent rule.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a highly portable rectangular scale with a protractor that is particularly useful in architectural design sites.

[Prior art and technical problems to be solved] Generally speaking, an accurate square ruler is indispensable for architecture.

In Japan, curved scales have been used since ancient times, making it possible to accurately and easily take right angles. However, a curved scale cannot take any angle other than a right angle, so if you want to take any angle other than a right angle, you must use a protractor and a straightedge together to create that angle. In this case,
In addition to the curved scale, I am forced to carry and use multiple rulers, which is very inconvenient.

The present invention was made in view of the above-mentioned drawbacks of conventional architectural rulers.
The technical problem is to provide a ruler that can be easily made with.

[Means adopted to solve the problem]

The means adopted by the present inventor to solve the above problem are as follows.

That is, by adopting a method of making the long and short straight ruler parts 1 and 2 intersect at a right angle and providing a protractor part 3 that is centered at the inner intersection O of the straight ruler parts 1 and 2 toward the outside of the right angle, it is possible to We provided a rectangular measure with a protractor that allows you to easily create angles of .

〔Example〕

The present invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIG. 1, two straight ruler parts 1 and 2, long and short, each having a scale engraved thereon are integrated in a curved shape orthogonal to each other. A semicircular protractor part 3 is provided toward the outside of the corner, with the intersection O of the inner sides of the straightedge parts 1 and 2 as the origin. This semicircular protractor portion 3 is graduated so that the extension line of the inner side of the long straight ruler portion 1 is 45° or 135°. Further, the long and short straight ruler parts 1 and 2 and the protractor part 3 are both made of transparent resin, which makes it convenient to work while looking through the object to be measured.

Although this embodiment is constructed as described above, in actual use of the rectangular scale of this embodiment, as shown by the dotted line in FIG.
In the protractor part 3, a predetermined angle α is made from point A on the straight line to that straight line.
By taking the deflected point B and drawing a straight line passing through the point AB using a straight edge portion l, the angle α can be easily determined. Also, especially when taking a right angle, you can do it in the same way as a normal curved length.

It should be noted that the present invention is not limited only to the above embodiments, and various modifications can be made within the scope of the claims.
In particular, the extension line of the inner side of the long and short straight ruler part is 0° or 90°.
You can also scale the protractor so that

[Effects of the present invention]

As described above based on the embodiments, the rectangular measure with protractor of the present invention can easily measure any angle with one ruler. For this reason, at the architectural design site,
It is very convenient as there is no need to carry around multiple rulers.

As described above, the rectangular measure with protractor of the present invention has great utility value.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of how to use the embodiment. l...Long straight ruler part, 2...Short straight ruler part, 3...
・Protractor part, 0...intersection, A-B...point, α...angle. Patent applicant: Iox Co., Ltd. Agent Patent attorney: Koji Togawa Figure 1 Figure 2

Claims (1)

[Claims] This rectangular measure with a protractor is characterized by having long and short straight ruler parts 1 and 2 that intersect at right angles, and a protractor part 3 centered on the inner intersection O of the straight ruler parts 1 and 2 toward the right angle outside.