BRL Radiac Calculator No. 1

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Country of manufacture: England,            Date of manufacture: ____
Diameter: 12.7 cm,      Weight: 26.1 gms
Materials: all plastic
Scales: specialized; inner two disks are reversible; pink is for land exposure and blue for sea exposure
Front
     Outer Disk (white): Dose Rate (Roentgens/hr)
     Miiddle Disk (both pink and blue): Time scale (from the onset of radiation)
     Inner Disk (both pink and blue): Time scale (from the time of initial exposure or entry into exposed area)
Back: Instructions for Use
Gauge Marks: [       ]
Condition: C5 (Signs of Normal use)
Came with: Original black leather pouch

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