Manufacturer: Aristo
Country of Manufacture: Germany
Type: 958 Geodat 360o
Date of Manufacture: ~ 1964
Scales: (Front) T, arc, DF [CF, CIF, CI, C] D, P, S
Scales: (Back) 1-cos, 1-cos, A [ B,1/tan(a/2), sincos, cos2 ] D, L, K
Number of Scales: 20
Gauge Points: π, p'', p'
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 1 front, 3 back (including ER)
Overall Length of Rule: 33.1 cm
Length of Scales: 25.0 cm
Width: 4.8 cm
Depth: 0.4 cm
Acquired from: Hans Kiesinger
Date: Dec 2008
Condition: Good
 Instruction (German). Condition good
 Cardboard case.  Condition good