Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New

Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New

Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New
Fearns Circular Slide Rule, with sophisticated spiral log-log scale. This is a well-designed, practical, pocket slide rule. It has scales corresponding to C, D, A, B, K, S, T, and LL. The spiral log-log scale is especially interesting. It has a little over three turns, and runs from 1.01 to 1,000,000. The rule is in nearly new condition, practically unused.

The disc and cursor both turn very smoothly. The plastic carrying case is included, and is in very good-to-excellent condition, with a few very small marks on the reverse. Also included is the English-language instruction leaflet, also in very good-to-excellent condition. No purchaser has ever reported damage to a slide rule in transit.

Please ask if there are any questions. The item "Fearns Circular Slide Rule, with sophisticated spiral log-log scale.

Nearly New" is in sale since Thursday, May 6, 2021. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "slide_rule_alley" and is located in Baton Rouge, Louisiana. This item can be shipped worldwide.


Fearns Circular Slide Rule, with sophisticated spiral log-log scale. Nearly New


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