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Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Linear
Aristo 168
AristoGermany
Plastic
1968 or after20 cmOverhead Projection in Classroom

Notes: "This working, transparent rule is designed for use on a classroom overhead projector; the rule scales are identical to the Aristo 0968 Studio slide rule. Note how label on face of rule admonishes users in six languages not to let rule overheat. Instruction manual (PDF) available."


Image 1