Pliiatskeratajureid kasutatakse plasmafüüsikas, eriti tokamakides, nagu CASTOR, ASDEX Upgrade, COMPASS, ISTTOK, MAST, TJ-K, RFX, H-1 Heliac, IR-T1, GOLEM, samuti madala temperatuuriga seadmetes alalisvoolu silindrilise magnetronina Prahas ning lineaarsetes magnetiseeritud plasmaseadmetes Nancys ja Ljubljanas.
Ball-pen probes are used in plasma physics, notably in tokamaks such as CASTOR, ASDEX Upgrade, COMPASS, ISTTOK, MAST, TJ-K, RFX, H-1 Heliac, IR-T1, GOLEM as well as low temperature devices as DC cylindrical magnetron in Prague and linear magnetized plasma devices in Nancy and Ljubljana.
