The easiest way to find out where the diagrams are is to buy the right map. In this case it will be the "Edwin Greloff's second map" which you can buy from the Midcopse Armorer. Of course you can also look for diagrams on your own.
During one of his numerous adventures, Geralt got his hands on a map covered with strange markings. He quickly deduced that they indicated the locations of hidden witcher caches and, intrigued by the chance of discovering long-lost crafting schematics, he set out to find them.
Edwin Greloff's second map
Ploughing syphilitic son of a poxy whore. I lost the first map I prepared for Professor Atimstein in a game of gwent. I must now return to my base camp near the tomb under Crookback Hills and start anew. Meanwhile, I will mark further points of interest on this map.
Edwin Greloff. Adjunct in Natural History at Oxenfurt Academy
Series:
Midcopse Armorer
Velen / Novigrad
Enhanced Griffin School Gear (Gauntlets)
Velen / Novigrad
Enhanced Griffin School Gear (Chest Armor)
Velen / Novigrad
Enhanced Griffin School Gear (Silver Sword)
Velen / Novigrad
Map location: Enhanced Griffin School Gear (Chest Armor)
Map location: Enhanced Griffin School Gear (Gauntlets)
Map location: Enhanced Griffin School Gear (Silver Sword)
Geralt found all the caches marked on the map and recovered the crafting schematics contained therein. With these in hand, he could add life-saving improvements to his combat gear. He did not know how many more such caches remained undiscovered in the world - but hoped one day he would have the chance to find more.
