Manufacturer: Aristo
Country of Manufacture: Germany
Type: 80147
Date of Manufacture:  
Scales: (Front) LL01, LL02, LL03, A [B, L, K, C] D, LL3, LL2, LL1
Scales: (Back) N, F [Q, W, T0] T1, P (9 specialised scales)
Number of Scales: 21
Gauge Points: π, e
Slide Rule made from: Plastic
Cursor made from: Plastic slightly magnifying
Cursor Lines: 4 front, 1 back
Overall Length of Rule: 17.4 cm
Length of Scales: 12.5 cm + 1.2 cm extension
Width: 3.8 cm
Depth: 0.3 cm
Acquired from: Julian Stiller
Date: Dec 2003
Condition: Good
 Leather sheath.  Good condition
 Constants card. Good condition
 Instructions (German). Good condition
 Appears to be a specialised rule dealing with
 heat exchange in elliptical steel pipes.
 The front scales are those of an Aristo Studio 0868.