This image shows some kind of formula that could be converted to TeX. Storing formulas as images makes it harder to change them. TeX also helps making sure that they all use the same font and size. A replacement has been proposed:
{{Information |Description ={{en|1=CAD Perpendicularity, SVG version created by SOLIDWORKS, based on the earlier JPG version, created by.}} {{zh|1=CAD 幾何公差 垂直度}} |Source ={{own}} |Author =Honmingjun |Da