Manufacturer: Aristo
Country of Manufacture: Germany
Type: 0903 Scholar
Number: WLS 20
Date of Manufacture: 1973
Scales: (Front) L, K, A [B, BI, CI, C] D, S, ST, T
Scales: (Back) None
Number of Scales: 11
Gauge Points: π, p
Slide Rule made from: Plastic
Cursor made from: Plastic slightly magnifying
Cursor Lines: 4 (including kW, PS)
Overall Length of Rule: 33 cm
Length of Scales: 25 cm
Width: 4.4 cm
Depth: 0.4 cm
Weight: 68 gm
Acquired from: Mark Butterworth
Date: Jul 2000
Condition: Good
 Plastic case. Good condition