Gothic tracery

The drawings have been vectorized (digitized) based on original materials from the book *Guide to the Construction of Gothic Details* by F. Roesling. (pages 21, 25 at the link>> https://archive.org/details/guidetoconstruct00rose/page/n21/mode/2up) I used basic construction tools and the strict geometric rules from the book. The auxiliary lines are presented in three colored layers. Please let me know if you need a DWG file.