Manufacturer:	Aristo
Country of Manufacture:	Germany
Type:	90174
Number:
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
Weight:
Acquired from:	Thomas Vater
Date:	May 2004
Condition:	Good
Accessories:	Plastic case. Good condition.
Comments:	A Radiation Exposure rule