Direct‑Reading Gamma & X‑Ray Dosimeters
Advanced PEN radiation dosimeters are direct‑reading personal radiation dosimeters designed to accurately measure and display accumulated gamma and X‑ray dose. Engineered for durability and precision, these dosimeters deliver higher reliability and build quality than typical dosimeters of their class, making them suitable for professional and technical radiation monitoring applications.
Accurate Cumulative Dose Measurement
PEN dosimeters provide a direct visual reading of total radiation exposure, allowing users to quickly determine accumulated dose without external readers or electronics. This makes them ideal for environments where real‑time awareness of personal radiation exposure is required.
Rugged, Hermetically Sealed Design
Each PEN radiation dosimeter features a sturdy metal clip for secure attachment to a pocket, belt, or equipment, ensuring consistent monitoring during use. The dosimeters are hermetically sealed and immersion‑proof, offering reliable performance in harsh or demanding environments.
Standards‑Compliant & Mission‑Ready
PEN dosimeters are designed to meet military and industry specifications, including requirements for the RADIAC Meter IM‑264/PD as well as ANSI N13.5 and ANSI N322 standards. This compliance supports their use in regulated, technical, and safety‑critical applications.
Reliable Personal Radiation Monitoring
By providing accurate measurement of radiation exposure received over time, PEN radiation dosimeters support effective personal radiation safety monitoring for professionals working in environments where gamma and X‑ray radiation may be present.


The Dosi-Lite provides illumination for a Direct-Reading Dosimeter in low light conditions which is held directly in front of the eye for viewing. The Dosi-Lite comprises of a light-emitting diode (LED) enclosed in a thimble-shaped flexible plastic casing, which slides onto the end of a dosimeter. When the user squeezes the casing, the leads are brought into contact with the batteries, thereby completing the circuit, lighting the LED, and illuminating the Direct-Reading Dosimeter.