Graduated arc for 'Leksell Stereotactic System' cranial measuring instrument by Elekta Instrument AB, Sweden, 1992-99.
Brain surgery requires precise and careful incisions so as not to unnecessarily damage parts of the surrounding tissue. This apparatus is used to accurately pinpoint areas of the brain. Known as the Leksell Stereotactic System, the apparatus is named after its inventor, Lars Leksell (who developed the device in 1949). Leksell also set up the company Elektra Instruments AB, which made and donated this apparatus to the Science Museum’s collections. It is shown here with the frame for the system (1999-982).