Manufacturer: Fearns
Country of Manufacture: England
Type: Circular
Date of Manufacture:  
Scales: (Front) K,C [D,A] B, LL, S, T
Scales: (Back) Conversion factors
Number of Scales: 8
Gauge Points: π
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 1
Overall Length of Rule: Diameter 12.8 cm (5")
Length of Scales:  
Depth: 0.4 cm
Weight: 72 gms
Acquired from: Christian Menard
Date: Aug 2001
Condition: Good
 Plastic sheath.  Good condition
 Instructions (English). Good condition
 LL scale to base 10