Methods and devices are provided that allow a physician to consistently and reliably locate an implantable, magnetically settable valve (valve) and to determine and/or change (adjust) a setting of the valve from a current setting to a target setting without interference from the valve and/or patient's skin. In particular, various locator tools are provided that include a housing having a deck extending thereacross that is formed at least in part of a material which is moveable to accommodate a protrusion of a hydrocephalus valve beneath skin.
