The Inventor's Handbook

From publisher blurb: The Tech Sphere is a new sphere for the Spheres of Might martial system. Useful for dabblers and full technicians alike, this sphere expands what your Pathfinder RPG character can do into realms hitherto unknown! Build drones and amazing gadgets! Expand firearm options from the simple to the modern! Graft artificial limbs to your body! With options from the medieval to steampunk modern, the inventor’s handbook greatly expands the options for adventurer-engineers of all types. Long live invention!