#Geiger_counter__Geiger-Muller_counter  counter tube that detects ionizing radiations
  supertype:  #counter_tube__countertube  a measuring instrument for counting individual ionizing events
  part:  #Geiger_tube__Geiger-Muller_tube  an ionization chamber contained in a tube in a Geiger counter

No statement uses or specializes #Geiger_counter; click here to add one.