Multi-Purpose Technical & Drawing Ruler

A quick note: This is my very first 3D design and project, and your feedback means a lot to me. This multi-purpose 16 cm technical ruler goes far beyond classic measuring by combining compass, protractor, and stencil functions.

Quick Angle Channels: Features 15, 30, 45, 60, and 75 degree guide channels on the left side to directly place your pen and draw smooth lines.

Cartesian Coordinate System: Includes a special drawing stencil to transfer X, Y, and Z axes to paper with perfect angles.

Central Protractor and Special Triangles: Contains 4 special right triangle stencils (35-55-90, 15-75-90, 30-60-90, and 45-45-90 degrees) right below the detailed protractor.

Ready-to-Use Circle Stencils: Provides circle templates ranging from 3 mm to 11 mm in diameter. These were designed with plastic printing tolerances in mind.

Built-in Compass System: Features 2 origin (center) points and holes that increase diagonally by 2.5 mm at each step. Fix a needle to the origin point on the exact same alignment, put your pen in the hole, and draw a perfect circle.

Grid Notebook Alignment System: Has square-shaped indentations on the bottom edge to instantly check if you are perfectly parallel to grid notebook lines.

DIY Anti-Slip Feet: Create anti-slip feet by slightly scraping the 4 corner slots on the bottom surface and applying a drop of hot glue.

FILE VERSIONS

RulerX (Full Detail): The main version where all measurements are engraved for every millimeter. Recommended for fine nozzles and high-calibration printers.

RulerX_Low (Easy Print): Optimized for standard printers. Text is enlarged, and numbers are placed every 2.5 cm instead of every centimeter to avoid clutter.

RulerX_Empty (Minimalist): A clean version containing no numbers or text except the brand logo.

PRINT SETTINGS AND USAGE NOTES

Ironing MUST BE OFF: When ironing is enabled, the precise numbers and texts on the ruler become blurry and unreadable.

Hole Tolerances: Depending on your printer model and slicer settings, the fill rate of the holes on the first layer may vary.

If the holes look too small or your printer has shrunk them, you can easily widen them by slightly scraping the insides with a utility knife.

Precision Warning: This ruler does not have the 100 percent precision of a professional steel ruler. It is designed for everyday drawings, schools, and hobbies, keeping plastic printing tolerances in mind.

If you are building a space rocket in your backyard, this ruler is probably not for you!