The Jansen Spectroscopes are a piece of headgear which can only be worn by Jan Jansen, a potential companion in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition, as long as he has at least 17 Dexterity. It raises Disarm Traps and Find Traps by 25%, Detect Illusion by 20%,and they can be used once per day to detect invisible creatures. Jan has this item equipped when he joins the party.
|“|| Jansen-Brand Micro-Macro Spectroscopes - (Official Spectroscopes of the Purple Brotherhood)
Another one of Jan Jansen's inventions, these glasses allow Jan to detect invisibility once per day. They also give Jan an additional +25% to his detect and disarm traps abilities. Various lenses on the contraption increase Jan's ability to detect illusions by 20%. The style of the Spectroscopes is so obvious it hardly needs to be mentioned.