PFSRD:Lens Of Detection
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Aura moderate divination; CL 9th
Slot eyes; Price 3,500 gp; Weight 1 lb.
This circular prism lets its user detect minute details, granting a +5 competence bonus on Perception checks. It also aids in tracking, adding a +5 competence bonus on Survival checks when tracking. The lens is about 6 inches in diameter and set in a frame with a handle.
Cost 1,750 gp