Vintage antique slide rule, logarithmic scale. Copy space.
Schlüsselwörter
antique,
background,
calculation,
calculating machine,
clean,
device,
engineer,
engineering,
equipment,
isolated,
large,
mathematical,
mathematic,
old,
pair,
plastic,
pocket,
retro,
rule,
ruler,
scale,
science,
shine,
slide,
tool,
vintage,
white,
wooden,
worn
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