Manufacturer: Aristo
Country of Manufacture: Germany
Type: Rietz 98
Date of Manufacture: ~1950
Scales: (Front) cm K,A [B,CI,C] D, L
Scales: (Back)              [S,ST,T]
Number of Scales: 10
Gauge Points: π, C, p'', p', C1
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 3
Overall Length of Rule: 29.9 cm
Length of Scales: 25 cm + 1.6 cm extension
Width: 4.2 cm (3.4 cm not including bevel)
Depth: 0.8 cm
Weight: 109 gm
Acquired from: Dick Rose
Date: June 2001
Condition: Medium
 Cardboard box: Poor condition