9 EA Ludlum Model 26-3 Radiation Frisker. The Ludlum Model 26-3 incorporates electronics and a time-tested GM detector in an ergonomically designed, ruggedly constructed, and water-resistant housing. The integrated instrument is cable-less thereby simplifying the process of frisking people and objects. The optimized configuration includes a standard 15.51 cm2 GM pancake, loud audible “click” output, and large auto-ranging LCD display with automatic LCD backlighting. Model 26-3 has the addition of a Units button that can display measurements in terms of mR/hr, µSv/h, dpm, or Bq. These features are combined in one convenient package making it easier than ever to detect alpha/beta contamination and measure gamma fields on personnel and objects.