Manufacturer: Aristo
Country of Manufacture: Germany
Type: Rietz 89 400g
Date of Manufacture:  
Scales: (Front) cm / K,A [B,CI,C] D, L
Scales: (Back) [S, ST, T]
Number of Scales: 10
Gauge Points: π,d, 1/d, p'', p'
Slide Rule made from: Plastic
Cursor made from: Plastic slightly magnifying
Cursor Lines: 4
Overall Length of Rule: 15.7 cm
Length of Scales: 12.5 cm + 1.1 cm extension
Width: 3.2 cm
Depth: 0.5 cm
Acquired from: V. Alanasov
Date: May 2013
Condition: Good
 Cardboard box. Good condition
 Leather sheath. Good condition