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A.W. Faber-Castell 67: Difference between revisions
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completed core of Darmstadt model. began Rietz
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(completed core of Darmstadt model. began Rietz) |
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The '''67''' pattern slide rule family by A.W. Faber-Castell is a series of pocket size slide rules starting in the fifties. It contains several variations of layout including revisions over time. | The '''67''' pattern slide rule family by A.W. Faber-Castell is a series of pocket size slide rules starting in the fifties. It contains several variations of layout including revisions over time. | ||
{{Infobox calculator|name=67/54 Darmstadt|type=Slide Rule (Pocket)|manufacturer=A.W. Faber-Castell|introduced=C. 1955|successor=67/54 B Darmstadt|precision=2 to 3 Significant Digits|display_type=Analogue Scales, Sliding Cursor (multiple hairlines)|display_size=5" (pocket)|dimensions=15 cm (approx. 6")}} | {{Infobox calculator|name=67/54 Darmstadt|type=Slide Rule (Pocket)|manufacturer=A.W. Faber-Castell|introduced=C. 1955|successor=67/54 B Darmstadt|precision=2 to 3 Significant Digits|display_type=Analogue Scales, Sliding Cursor (multiple hairlines)|display_size=5" (pocket)|dimensions=15 cm (approx. 6")}}{{Infobox calculator|name=67/87 Rietz|manufacturer=A.W. Faber-Castell|introduced=C. 1955|successor=67/87 b Rietz|precision=2 to 3 Significant Digits|display_type=Analogue Scales, Sliding Cursor (multiple hairlines)|display_size=5" (pocket)|dimensions=15 cm (approx. 6")}} | ||
== Overview == | == Overview == | ||
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== 67/54 Darmstadt == | == 67/54 Darmstadt == | ||
The model 54 Darmstadt was a pocket version of the highly popular Darmstadt layout. It sported a cursor with at least two secondary hairlines which helped with finding the area of circles with known diameter, among other things. | The model 54 Darmstadt was a pocket version of the highly popular Darmstadt layout. It sported a cursor with at least two secondary hairlines which helped with finding the area of circles with known diameter, among other things. Faber-Castell marketed this model towards physicists, engineers, mathematicians, and university students. | ||
=== Layout === | === Layout === | ||
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==== R Model ==== | ==== R Model ==== | ||
the 67/54 R Darmstadt made no layout changes for accommodating the Addiator on the back. | the 67/54 R Darmstadt made no layout changes for accommodating the Addiator on the back. The RB model had no rear window for LL scale use without inverting the slide. | ||
== 67/87 Rietz == | |||
The model 87 Rietz was consistent with layouts seen more typically in the US. | |||