Manufacturer: Aristo
Country of Manufacture: Germany
Type: System Gruter 10065
Number:  
Date of Manufacture: ~1951
Scales: (Front) T, ST, DF [5 scale multi-precision, C] D, ST, S
Scales: (Back) K, A [B, 5 scale multi-precision] D, L
Number of Scales: 22 + 25 on separate slides!
Gauge Points: π, e
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 1 front, 1 back
Overall Length of Rule: 33.1 cm
Length of Scales: 25.0 cm
Width: 4.8 cm
Depth: 0.4 cm
Weight:  
Acquired from: Jose Albarran
Date: Jun 2008
Condition: Good
Accessories: 
 Cardboard case. Medium condition
Comments: 
 The main slide contains precision scales. 
 The "Log log" slide has the following scales:
 front [CF, LL3, Ll2, Ll1, C]   back [B, LL01, LL02, LL03, C] 
 The "Topographical" slide has the following scales:
 front [B, sin * cos, cos2, E-R, C]  back [CF, T, 2 special, C]
 The "Circular" slide has the following scales:
 front [ tan a/2 in 3 scales, (π * a/180) in 3 scales] back [ tan a/2 * tan a/4 in 4 scales]