Manufacturer: Aristo
Country of Manufacture: Germany
Type: 958 Geodat 400g
Number: 561
Date of Manufacture: 1956
Scales: (Front) ctg, T, arc, DF [CF, CIF, CI, C] D, P, S, C
Scales: (Back) 1-cos, 1-cos, A [ B,1/tan(a/2), sincos, cos2 ] D, L, K
Number of Scales: 22
Gauge Points: d, π
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 2 front, 3 back (including ER)
Overall Length of Rule: 33.8 cm
Length of Scales: 25.0 cm C/D, 27.0 cm CF/DF
Width: 4.8 cm
Depth: 0.5 cm
Acquired from: Dieter Mannhart
Date: June 2006
Condition: Good
 Cardboard box. Condition medium
 Instruction (German). Condition medium