Thread Ruler & Multi-Function Drafting Instrument

Unleash Your Creativity with Versatile Geometry

Compass Protractor and Ruler combination

An All-in-One Geometry Set patented for drawing elliptic figures

Draw arc, circle, parallel line and elliptic figures with a unique thread construction

Draw Arcs and Circle

Mark the center(c) and radius (r) on the paper using the straight edge of the ruler
Position the pointed edge on the center(c) and extend the slide ruler until the pencil is positioned on the radius (r).Mark the center(c) and radius (r) on the paper using the straight edge of the ruler
It is best to slide the paper while marks are drawn until the arcs or circle is complete.

Draw Elliptic figures

Mark the two foci(f1,f2) and the maximum radius (r) on the paper using the straight edge of the ruler
Extend the slide ruler until the two pin holes align with the two foci
Extend the thread equal to the radius (r) of the ellipse.
Hook the pencil to the thread and move it in such a way that the thread stays taut while marks are drawn on the sheet (this will create half of the ellipse).
To complete the ellipse, turn around the sheet to interchange the foci and repeat the stps.

Draw parallel lines

Mark the distance (D) from the straight line where a parallel line is to be drawn
Position the straight edge of the protractor against the straight line and extend the sliode ruler to distance (D)
Draw a line along the extended arm of the slide ruler passing through D.

Protractor

Position the protactor base along the end of the line sgment
Mark desired angle B
aw a straight line through point B connecting the start ofthe base line.

The **Thread Ruler and Multi-Function Drafting Instrument** is a single, groundbreaking tool designed to revolutionize how students and educators approach geometry and drafting. This all-in-one instrument allows for the precise creation of various geometric shapes and lines, seamlessly integrating multiple functionalities into a compact design.

Core Capabilities:

**Circles & Ellipses:** Effortlessly draw perfect circles and intricate ellipses, making complex curves simple and accessible.
**Parallel Lines:** Achieve consistent parallel lines with unparalleled ease and accuracy.
**Protractor:** Integrated protractor features enable direct measurement and drawing of angles from 0 to 360 degrees.
**Standard Ruler:** Functions as a precise measuring ruler for all your linear measurement needs.
**Drawing Compass:** Acts as a versatile compass, allowing for arcs and circles of various radii.

Innovative Design & How It Works:

At the heart of its multi-functionality is an ingenious design:

**Slide Ruler with Marking Device:** The instrument features a slide ruler that securely holds your marking device (pen, pencil, chalk).
**Thread Mechanism:** A central stem extends from the slide ruler, with a **thread attached**. This thread connects to a specific point on the main ruler body, typically at an outer end of the integrated protractor.
**Ellipse Drawing:** By leveraging the thread and the movable marking device, users can precisely define and draw ellipses based on the fundamental properties of ellipses (sum of distances from two foci). This unique thread system ensures smooth and accurate curves.

This instrument is designed for use on **any flat marking surface**, including paper, traditional drafting tables, chalkboards, and modern dry erase boards, making it an indispensable tool for classrooms, design studios, and personal projects.

Key Benefits for Education:

Multi-Functional Learning

Combines several instruments, reducing clutter and teaching the interconnectedness of geometric tools.

Enhanced Precision

The unique thread mechanism offers superior accuracy for complex shapes like ellipses.

Hands-On Geometry

Transforms abstract geometric concepts into concrete, visual, and tactile experiences.

Versatile Classroom Use

Adaptable to various teaching environments and surfaces, from individual student desks to large classroom boards.

"Draw, measure, and explore with unparalleled ease – the ultimate tool for every math and science enthusiast!"

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