Faber Castell slide rule 1/98 Elektro prestigious schoolboys (and schoolgirls) calculation tool of the1950s and hard case

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Size: 4805px × 3203px
Photo credit: © David Porter Fine Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: calculate, calculator, castell, electrical, engineer, engineering, engineers, faber, rule, science, scientific, scientist, scientists, slide, vintage