https://splinegauges.com/product/lead-and-involute-artefacts/
Lead And Involute Artefacts Global Manufacturer
Spline manufactures highly-accurate lead and involute artefacts used to verify gear testing machines for clients worldwide.
global manufacturerlead
https://www.thingiverse.com/thing:5505
Public Domain Involute Parameterized Gears by 3dexplorer - Thingiverse
Jan 9, 2011 - This is a public domain parametric OpenSCAD script for generating involute spur gears, helical gears, partial gears, and racks. The file defines the m
public domaininvolutegears