Manufacturer: B.R.L.
Country of Manufacture: England
Type: Radiac No. 1
Number: 6665-99-911-0060
Date of Manufacture: ~ 1966
Scales: (Front) 3 for Land Radiation, 3 for Sea Radiation
Scales: (Back) Instructions
Number of Scales: 3 + 3
Gauge Points:  
Slide Rule made from: Plastic
Cursor made from: No cursor
Cursor Lines:  
Overall Length of Rule: 12.7 cm Diameter
Length of Scales:  
Width: .
Weight: 13 gms
Acquired from: Julien Dompierre
Date: July 2002
Condition: Good
 Plastic case. Good condition
 Two rotating inner discs.