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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
None
Perrygraf
USA
Cardboard
1962
Dia - 16.5 cm
Radiation Dosage
Notes:
"1) Made for Giannini Controls Corp. 2) Cosmic Ray Dosage and dosage from Granite, Sandstone, Shale and Linestone"
Image 1
Image 2
