Licenses

MeasureOnce is built on open specifications, open-source software and openly licensed fonts and data. Thank you to everyone who made them. What you generate here is yours to use however you like; see the terms.

Specifications and data

  • Gridfinity (MIT). The bin and baseplate generators follow the public Gridfinity specification by Zack Freedman: grid pitch, base profile, and magnet and screw hole geometry. See gridfinity.xyz.
  • Star positions, brightness and constellation lines (BSD 3-Clause). The star map uses the Hipparcos catalogue (ESA, 1997) and IAU constellation lines and names, as packaged by d3-celestial by Olaf Frohn, limited to stars brighter than magnitude 6. The license text is below.
  • City list (CC BY 4.0). Place search uses cities of 50,000 people or more from GeoNames, built into the site so searching never contacts an outside service.
  • Part models (CC BY 2.0 and 4.0). The brick part finder shows models from The LDraw Parts Library, an unofficial, community-built collection of digital part models by many contributors. They were repaired into printable solids and repacked for this site. License: CC BY 4.0; the library is also available under CC BY 2.0. LDraw™ is a trademark owned and licensed by the Estate of James Jessiman.

Trademarks and removal requests

LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site. MeasureOnce is not affiliated with the LEGO Group or with LDraw, and every other name mentioned belongs to its owner. Part numbers are the design numbers used across the hobby, and the part models are for personal, non-commercial printing.

If you hold rights in a part shape or name shown here and want it taken down, write to us through the contact page and it will be removed promptly.

Software

  • Manifold (Apache 2.0). The geometry engine that builds every model in your browser. License: apache.org/licenses/LICENSE-2.0.
  • Open CASCADE Technology (LGPL 2.1 with the Open CASCADE exception) and replicad (MIT). They build the exact-geometry STEP files. Open CASCADE is © Open Cascade SAS, compiled to WebAssembly in the replicad-opencascadejs package by Steve Genoud (LGPL 2.1), and it loads only when you download a STEP file. It is used unmodified as a separate component that can be replaced with any other build of the same library, and its source and build scripts are published by those projects. Full license: gnu.org/licenses/old-licenses/lgpl-2.1.html.
  • opentype.js (MIT). Frederik De Bleser and contributors. Turns a font's outlines into printable letters.
  • Astronomy Engine (MIT). Donald Cross. Works out where the sky is for a given moment and place.
  • QR Code Generator (MIT). Kazuhiko Arase. Builds QR matrices locally for QR and Wi-Fi plates.
  • three.js (MIT). mrdoob and the three.js authors. The 3D preview.
  • React (MIT), Meta and contributors; Astro (MIT), the Astro contributors; Zod (MIT), Colin McDonnell; fflate (MIT), Arjun Barrett. The site itself and the zip and 3MF files.

Fonts

All fonts are used under the SIL Open Font License 1.1 and served from this site. Each name links to that font's license text.

Site

Lettering in signs, keychains and dice

License texts

d3-celestial (star data), BSD 3-Clause

Copyright (c) 2015, Olaf Frohn
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

MIT license (as used by the MIT-licensed components above)

Copyright (c) the authors and contributors of each component named above.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.