Methods and devices are provided that allow a physician to consistently andreliablylocate an implantable, magnetically settable valve (valve) and to determineand/or change(adjust) a setting of the valve from a current setting to a target settingwithout interference fromthe valve and/or patient's skin. In particular, various locator tools areprovided that include ahousing having a deck extending thereacross that is formed at least in part ofa material which ismoveable to accommodate a protrusion of a hydrocephalus valve beneath skin.
