A lovely old ivory ruler | Collectors Weekly

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Posted 11 years ago

Phatbuddha
(220 items)

A lovely old ivory ruler made in France. I'm not sure how old it is maybe 1930's it's still got the Leather case with a yellow Magnifying glass

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TallCakes, 11 years ago
your slide rule is most likely pre-1970s, as the introduction of scientific calculators in the early 70s rendered these obsolete. Prior to the scientific calculator the slide rule was use as a mechanical calculator by engineers and scientist for complicated logarithmic calculations.
trunkman, 11 years ago
On another post of a slide ruler on this site is a reference to a website that tracks these instruments and has pertinent info on them. Cool piece...
Phatbuddha, 11 years ago
Nice1 guys :)

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A lovely old ivory ruler In Tools and Hardware > Rules and Rulers > Show & Tell.
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