Manufacturer: Blundell Harling
Country of Manufacture: England
Type: Classmate 812
Number:  
Date of Manufacture:  
Scales: (Front) S, T, A [B, CI, C] D, K, L
Scales: (Back)  
Number of Scales: 9
Gauge Points: π
Slide Rule made from: Plastic
Cursor made from: Plastic slightly magnifying
Cursor Lines: 3
Overall Length of Rule: 17.3 cm
Length of Scales: 12.5 cm
Width: 3.7 cm
Depth: 0.4 cm
Weight:  
Acquired from:  
Date:  
Condition: Good
Accessories:
 Plastic sheath
Comments: