Recently, I needed to do parallel markings to an edge, but I did not find quite the perfect tool for me. This is why I created my own version from scratch in OpenSCAD. (If you are interested in a parametric V2, let me know in the comments!)

(The design is inspired by this model, but everything was re-designed from scratch)

Features

• Mark parallel to edges
• Available in metric and imperial units
• Available in different lengths: 25cm, 15cm, 5cm, 10in, 6in, 2in
• Holes for every millimeter (1/16 inch)
• Printable without AMS by pausing and switching filament at the right height (before layer 3 and before layer 9)

Recommended print settings (or just use the provided print profiles)

• Layer Height: 0.2mm (also for first layer)
• Only one wall loop on first layer
• Infill direction: 45° (or 0° if the gauge is placed diagonally on the build plate)
• Build plate: Smooth plate (for other plates, the numbers will not be that clean)
• Using adhesives is strongly advised