"3.6 Roentgen, not great, not terrible." "The dosimeter only goes up to 3.6 Roentgen though!" "He's delusional, take him to the infirmary." I made several dosimeters/geiger counters, and used them for the TI update. Click that orange button on the dosimeter, and it'll switch between survey and dosimeter. Press space to set the radiation (must be a number duh)
About the GammaSense: The GammaSense personal dosimeter is a simple instant alert dosimeter created by Electro-Science, and provides instant results. The GammaSense has a strip of a chemical compound that instantly darkens in response to exposure to ionizing radiation. The card is always active, does not need calibration or batteries, is impervious to an EMP attack, and has a shelf life of about 2 years. The product is used widely by many walks of life that handle radioactive materials, and is a cheap alternative to electronic dosimeters.