A (Free!) collection of over a hundred Meccano pieces with tilable 2k textures in 4 different colours. These are generally accurate to within 1/32 of an inch and are based on scans of the original 1930s - 1950s drawings. Some values have been rounded for example a measurement of 1" 31/32 has been rounded to 2". All of the meshes are collapsed and have basic box or cylindrical mapping applied.
Previews are rendered with Redshift but the materials are all clearly labled and can easily be converted / relinked to your renderer of choice.
The FBX file has only been tested in C4D R21, 3DSMax 2019 and 2021 and Windows 3D Viewer but should work in other applications.
Measurements are in Imperial as the original documentation I've worked from is pre-decimal (within the UK) Sorry about that.