The invention relates to the improvement of the device existing for architectural drafting purposes. For many architectural students and architects, carrying a 100 cm long scale to college, office and back home makes them uncomfortable and also is a heavy burden on them. The 100 cm scale also occupies a lot of space in the vehicle in which it is carried. These problems can be overcome with the help of the present invention which provides a flexible scale comprising of foldable joints at every 10-15 cm length of the 100 cm scale, which make room for folding the 100 cm scale into 15 cm length.
The PURPOSE of the invention is to shorten the length of the product to any other smaller dimensions like 10 or 15 cm, but still maintaining the functionality of a 100 cm scale.
The FORM OF THE INVENTION is explained in the following way. The joints which allow the 10-15 cm smaller parts to be folded, can be manufactured with a small extrusion on one of the smaller parts and a hole of the same dimension on the other adjacent piece. Hence, the extruded portion can be fitted into the corresponding hole.
There will be another set of circular holes on either side of the joints on each adjacent smaller parts of the scale. The 2 circular holes allow for a very small flexible rubber/polymer to be permanently fitted in them. This same flexible rubber/polymer goes into the holes of the opposite adjacent piece also. So, flexible rubber/polymer will help in holding the adjacent smaller parts together even when they are detached.
At the far top end of the scale, just before the zero marking of the scale starts, there is a rectangular support that helps the scale to slide on the drafting table easily. This rectangular support is placed perpendicular to the length of the scale. This rectangular support which is perpendicular to the scale at the times of drafting needs to be rotated 90 degrees and made parallel and in line with the scale for the purpose of easily packing and carrying it. The perpendicular support and the top end of the scale piece is connected by a cylindrical piece which has dual functions. One of the functions is that is that it connects the perpendicular support to the top end of the first 10-15 cm smaller part which enables the scale to be aligned with the drafting table. The second function being that, it acts as a stopper and a pivot for rotating the support perpendicular and parallel to the scale.

BRIEF DESCRIPTION OF THE DRAWING :
FIG. 1 shows the 3d model of the flexi scale when the 10-15cm smaller parts are detached.
FIG.2 shows the 3d model of the flexi scale when folded.
FIG.3 shows the 3d model of the flexi scale in position at the time of drafting.
As shown in fig.l, the whole part of the 100 cm scale(comprised of 10-15 cm smaller pieces-3) is held together with the perpendicular support-6 with the help of a cylindrical piece-1 .The 10-15 cm smaller pieces-3 are held together when detached with the help of a flexible rubber piece-4.But these smaller parts need to be attached at the time of drafting. So, these smaller parts are held together by an extrusion-2 and a hole-5 positioned on the either sides of the adjacent smaller parts-3 as shown in the figure. 1.
As shown in fig.2, the flexi scale when folded takes this form(shown in the figure) making it easier to carry it in a small pouch. When folded, the 10-15 cm smaller pieces-3 are positioned one over the other in a vertical manner. The flexible piece rubber piece-4 bends in order to facilitate for the vertical alignment of the 10-15 cm smaller pieces-3. In this position, the perpendicular support-6 is rotated 90 degrees with the center of the cylindrical piece-1 as the pivot point. This kind of rotation allows for the perpendicular piece-6 and the 10-15 cm smaller pieces to be aligned in the same horizontal axis as shown in the figure.2.This alignment makes it easier for the folded scale to be packed.
As shown in fig.3, the flexi scale at the time of drafting comes back to it's fully functional form with it's 10-15 cm smaller pieces-3 joined together to form one single 100 cm unit. The extrusion-2 on each of the 10-15 cm smaller piece-3 gets fixed into the holes-5 of the corresponding 10-15 cm smaller pieces-3.The flexible rubber piece-4 gets contracted into the corresponding side of the 10-15 cm smaller pieces-3. At the other end, the perpendicular support-6 gets back to it's perpendicular alignment with the scale so that it can easily slide along the edge of the drafting table.
ABSTRACT OF THE INVENTION :
A device useful for the architectural drafting purposes which can be carried and packed easily in a 10-15 cm pouch is disclosed. The device consists of several pieces of plastic held together by small elastic rubber pieces. This makes the device to be flexible, easy to carry and transport.

I CLAIM,
1] A hundred centimeter long scale which can be formed by joining many 10-15 cm smaller units of the same scale which are joined with the help of a extrusion and a hole at the adjacent units, the adjacent units being held together even when unjoined with the help of elastic rubber pieces mounted into 10-15 cm smaller pieces. The perpendicular support placed at the far end of the scale consists of a translucsent rectangular piece filleted at it's corners. The perpendicular support is being held by a cylindrical piece which attaches itself to the bottom of the first of the 10-15 cm smaller units.
2]The flexible scale device as claimed in CLAIM I consists of a 10-15 cm smaller units which when joined together with many of the similar kinds of units with the same shape and dimension form a 100 cm long scale. Each 10-15 cm smaller units can be made of a transparent material(plastic or biopolymers) enabling to see the drawing underneath.
3]As claimed in CLAIMS 1 AND 2, the joints that connect the 10-15 cm units consists of a extrusion and a hole on the corresponding faces of the 10-15 cm smaller units. This can be made of a slightly harder material to provide the necessary joint strength.
4] As mentioned in CLAIM 1, the 10-15 cm smaller unit when unjoined(detached) and folded one over the other, they are held together by the elastic rubber pieces mounted at the adjacent faces of the units.
5] As mentioned in claim 1, the perpendicular unit is held together with the first of the 10-15 cm unit with the help of a cylindrical joint which helps the perpendicular units to rotate about it's center.