This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Perpendicularity. en CAD Perpendicularity SVG version created by SOLIDWORKS based on the earlier version created by zh CAD own Honmingjun Use TeX perp used as par of the set of Tolerancing symbol Tolerancing symbols files Mathematical symbols
Page 2023 Free-images.com. All images are Public Domain