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Aristo 301 "Junior" classroom demonstration linear slide rule

Major collection: Science & Technology
Object type: slide rule
Maker: Aristo
Place made: Germany
Materials: PVC plastic
Measurements: 1 1/2 in x 16 3/4 in x 78 1/2 in

White slide rule with yellow lines at top and bottom of slide. Grey handles on ends. Scales: DF [CF, CIF, CI, C] D, A, K. Label with cleaning instructions on back.