Manufacturer: Aristo
Country of Manufacture: Germany
Type: Rietz 99
Number: 2LS 01
Date of Manufacture: 1973
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, d
Slide Rule made from: Plastic
Cursor made from: Plastic      Slightly magnifying
Cursor Lines: 4 lines
Overall Length of Rule: 31 cm
Length of Scales: 25 cm + 2.2 cm extension
Width: 4 cm
Depth: 0.7 cm
Weight: 96 gm
Acquired from: Dick Rose
Date: June 2001
Condition: Good
Accessories: 
 Cardboard box.  Condition good
 Instructions (German). Condition good
 Plastic box. Condition good
 Aristo Sheet 1364. Condition good
Comments: 
 The trig scales are in degrees and minutes