The present invention relates to a drawing assisting tool, comprising at least one thin template with a set of solid and dashed grooved lines, in which said grooved lines are adapted to guide the drawing of at least one complete spatial body on a flat surface.

The present invention relates to a drawing assisting tool, comprising at least one thin template with a set of solid and dashed grooved lines, in which said grooved lines are adapted to guide the drawing of at least one complete spatial body on a flat surface.

A multifunctional writing device includes a hollow body, wherein the hollow body comprises one or more cavities configured to store a mechanical pencil, a multifunctional drawing tool, a compass needle, a stylus, an eraser, a USB flash drive, an imaging system, a projector pen, a set of cameras, and attaches a projector stick. The first writing member comprises a mechanical pencil system being provided in a first portion of the hollow body and a touch ID sensitive barrel. A second projector member comprises a projector pen and attaches a projector stick. The first portion of the hollow body is at the opposite end of the second portion of the hollow body. The multifunctional writing device allows for projecting self-leveled and auto calibrated geometry drawing tools. A method for digitizing the written data on paper and a system for secure, auto proctored, and auto grading of examinations is provided.

A multifunctional writing device includes a hollow body, wherein the hollow body comprises one or more cavities configured to store a mechanical pencil, a multifunctional drawing tool, a compass needle, a stylus, an eraser, a USB flash drive, an imaging system, a projector pen, a set of cameras, and attaches a projector stick. The first writing member comprises a mechanical pencil system being provided in a first portion of the hollow body and a touch ID sensitive barrel. A second projector member comprises a projector pen and attaches a projector stick. The first portion of the hollow body is at the opposite end of the second portion of the hollow body. The multifunctional writing device allows for projecting self-leveled and auto calibrated geometry drawing tools. A method for digitizing the written data on paper and a system for secure, auto proctored, and auto grading of examinations is provided.

A straight-edge drawing guide comprising a base having an elongated 90-degree member attached to one edge and capable of being moved along a planar surface. An angular measuring device allows a user to adjust the position of the guide to any angle relative to a desired datum. A user can then use a marking device adjacent to the guide to produce substantially straight lines.

A plotter apparatus inscribes a polygon in a circle, and includes a ruler body, a first slider, a second slider, multiple brachiums, and a nib member. The ruler body comprises a knap, and a first ruler groove and a second ruler groove to allow movement of the first slider and the second slider. The brachiums are connected across the ruler body via pivots. The nib member allows the drawing of the circle. A fourth brachium is attached to a predetermined numbered hole on a second and a third brachium as per the number of sides required on the polygon. The length of each side of the polygon is retrieved between the knap and a slider. Cyclic arcs, with the determined length as a length of one side of the polygon, are drawn along the circumference of the circle. The arc intersections on the circle are joined together to define the polygon.

A plotter apparatus inscribes a polygon in a circle, and includes a ruler body, a first slider, a second slider, multiple brachiums, and a nib member. The ruler body comprises a knap, and a first ruler groove and a second ruler groove to allow movement of the first slider and the second slider. The brachiums are connected across the ruler body via pivots. The nib member allows to draw the circle. A fourth brachium is attached to a pre-determined numbered hole on a second and a third brachium as per the number of sides required on the polygon. The length of each side of the polygon is retrieved between the knap and a slider. Cyclic arcs, with the determined length as a length of one side of the polygon, are drawn along the circumference of the circle. The arc intersections on the circle are joined together to define the polygon.

The present invention relates to a rectangular multifunctional ruler which is used for measuring and design. In particular the ruler of the present invention enables the user to make measurements in different scales thus the ruler is suitable for multi-scale measurements. In addition to that, the ruler of the present invention also enables the user to sketch mathematical models or in general all kinds of shapes in order to form an unlimited number of patterns within a very short amount of time.