Blueprints of the iPhone 5 are available on Apple’s developer web site for all to see. They include documents with precise dimensions as well as instructions for how to build a case for the new device, according to Gizmodo.

The blueprints reveal the intricacy of the new smartphone from Apple that goes on sale on Sept. 21. They could help product manufacturers get a head start on creating accessories for the iPhone 5. That accessory market is now a multibillion-dollar industry. Preorders for the iPhone 5 went live on Friday morning and Apple sold out of the initial launch-day supply in just an hour. Verizon and AT&T have also sold out and estimate it will be two or three weeks until they can get more supplies.

Here’s a link to a larger image on Apple’s developer site.