To print the measuring data of the CURIEMENTOR 3 and CURIEMENTOR 4 isotope calibrators on paper labels, the suitable printer can be connected to the display unit via a serial interface. The user has the possibility to print the measuring results including administrative data on selfadhesive stickers of a thermal paper roll. The width of the paper roll is 58 mm. The label size is 50 mm x 30 mm. The printer is connected to the mains via a power supply, which is included in the delivery.