This diagram can be purchased from the following merchants:
- Handlarz w Tartak na Ard Skellig
- Płatnerz in Larvik
- Płatnerz in Kaer Muire
- Płatnerz in Twierdza Kaer Trolde
- Płatnerz in Przystań w Urialli
Another copy can be found in a chest by the shrine where Hammond is praying, on Faroe.