Precision Metric Sliding Ruler - Metrolog Inspired
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A sleek, 3D-printable sliding ruler featuring a metric scale, inspired by the Craighill Metrolog Ruler
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Public Domain
Overview
This project is a functional, minimalist sliding ruler designed for quick measurements and a satisfying tactile experience. The design focuses on a clean metric scale, offering precision in a compact form factor. While inspired by the premium Craighill Metrolog, this version is optimized for 3D printing and features a dedicated millimeter-only scale for those who prefer working exclusively in metric.
Features
Metric Precision: Clearly marked millimeter increments for accurate small-scale measurements.
Tactile Sliding Mechanism: Designed with tight tolerances to ensure a smooth but controlled slide.
Minimalist Aesthetic: A slim profile that fits easily into a pencil case, pocket, or desk drawer.
Recommended Print Settings
Layer Height: 0.16mm or 0.20mm (recommended for clear text and increment markings).
Infill: 15–20% (Grid or Gyroid).
Material: PLA or PETG
Orientation: Print flat on the bed for the most accurate scale reproduction.
Color Change: For the best results, perform a color change on the slide rule so the circle indicator on the rule stands out.
Assembly Instructions
This design uses a "no-hardware" approach to keep the sliding component secure:
Slide the ruler insert into the main housing.
Insert Filament Pin: Once the slide is in place, simply insert a small piece of 1.75mm filament into the hole at the top.
Trim the filament flush with the body. This acts as a permanent stop to keep the ruler from sliding out during use.
If needed, either use a touch of super glue, or melt the tip of the filament against the body to keep it from sliding out over time.