Manufacturer: Unknown
Country of Manufacture: England?
Type: Circulator
Number:  
Date of Manufacture:  
Scales: (Front) C [D, A] CI
Scales: (Back)  
Number of Scales: 4
Gauge Points: π
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 2
Overall Length of Rule: 7.6 cm Diameter
Length of Scales:  
Width:  
Depth: 0.2 cm
Weight:  
Acquired from: Alison Ling
Date: August 2005
Condition: Good
Accessories:
 Plastic sheath. Good condition
Comments: