Manufacturer: Aristo
Country of Manufacture: Germany
Type: 90174
Date of Manufacture:  
Scales: (Front) 7 special
Scales: (Back) 6 special
Number of Scales: 13
Gauge Points: 9 special
Slide Rule made from: Plastic
Cursor made from: Plastic
Cursor Lines: 1 front, 1 back with cursor scales
Overall Length of Rule: 33.8 cms
Length of Scales: 27.9 cms maximum
Width: 4.8 cms
Depth: 0.5 cms
Acquired from: Thomas Vater
Date: May 2004
Condition: Good
 Plastic case. Good condition.
 A Radiation Exposure rule