Manufacturer: Standardgraph
Country of Manufacture: Germany
Type: Circular 900
Number:  
Date of Manufacture:  
Scales: (Front) C [D] C
Scales: (Back) None
Number of Scales: 3
Gauge Points: π
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 1
Overall Length of Rule: 12.2 cm Diameter
Length of Scales:  
Width:  
Depth: 0.2 cm
Weight:  
Acquired from: Volker Claasen
Date: Nov 2004
Condition: Good
Accessories:
 Leather sheath.  Good condition
 Instructions (German). Medium Condition
Comments: