Interested in finding out more out about such calculating wonders?
Then try one of the slide rule related articles (often light-hearted) I have published.
Go to the search papers page.
| You searched for: DARGUE Bros. Ltd. / Simplon | |||||
|---|---|---|---|---|---|
| Model | Type | Material | Comments | Thumbnail | |
| Bilateral | Log-Log - early | wood/paper covered by clear plastic | “Half-duplex” layout with scales on back of closed frame stock & extra-wide cursor track for reversing cursor - unmarked & early version of S.B.10 because patent (GB413308) is still pending - read more ... |
|
|
| S.B. 5 Bilateral | Pocket Enhanced Mannheim - early | wood/paper covered by clear plastic | “Half-duplex” layout with scales on back of closed frame stock & reversible cursor - pocket version of S.B.10 with LL scales - early version because patent (GB413308) is still pending - read more ... |
|
|
| S.B.10 Bilateral | Log-Log | wood/paper covered by clear plastic | “Half-duplex” layout with scales on back of closed frame stock & dual cursor tracks for reversing cursor - read more ... |
|
|
| S.E.10 (Bilateral) | Electro | wood/paper covered by clear plastic | “Half-duplex” layout with scales on back of closed frame stock & dual cursor tracks - W & V scales in well of stock - degree (<5˚34’) Tan & degree (70˚-90˚) Sin look-up tables on back of extra wide non-reversible slide with chamfered edge cursor as part of well + table of conversion factors on back - read more ... |
|
|
| S.M.10 Major (Bilateral) | Log-Log | wood/paper covered by clear plastic | “Half-duplex” layout with scales on back of closed frame stock - chamfered opening used instead of reversible cursor - degree (<5˚34’) Tan & degree (70˚-90˚) Sin look-up tables also on back of non-reversible slide - divisions on 2 & 1 cycle A & D on back of stock run from 0.01-0.1-1.0 & 0.1-1 + table of conversion factors on back - read more ... |
|
|
| S.P. 5 Primary | Pocket Mannheim | wood/paper covered by clear plastic | Pocket version of S.P.10 but without LL & CI scales - extensive table of conversion factors on back - read more ... |
|
|
| S.P.10 Primary | Log-Log | wood/paper covered by clear plastic | Extensive table of conversion factors on back - read more ... |
|
|
| S.R.10 Bilateral | Rietz | wood/paper covered by clear plastic | Later “Half-duplex” layout with scales on back of closed frame stock & extra wide single track for reversing cursor - read more ... |
|
|
| SR-2 | Pocket Mannheim | plastic/bakelite | Unusual dirty orange colour plastic = form of bakelite - same as SR-1 except with full-view glass cursor & sturdier construction - unusually with original case - read more ... |
|
|
| SR-3 | Pocket Uniface Technical | plastic/bakelite | Unusual dirty orange colour plastic = form of bakelite + aluminium strengthening strip on back - “Uniface” type (S & T scales being on front face instead of back of slide) is an innovation others would follow years later - read more ... |
|
|
| SR-5 | Uniface Technical | plastic/bakelite | Unusual dirty orange colour plastic = form of bakelite - full version of SR-3 + “Uniface” type (S & T scales being on front face instead of back of slide) is an innovation others would follow years later - read more ... |
|
|
| SR-6 | Enhanced Mannheim | plastic/bakelite | Unusual dirty orange colour plastic = form of bakelite - slide not reversible but 2 windows in the back & aluminium strengthening strip - read more ... |
|
|
| WR-6 Standard | Enhanced Mannheim | wood/celluloid facings | De-Luxe model with plain white celluloid faced slide & back + cm scale on back - 1 of 5 WR models with higher quality finish & higher retail price - read more ... |
|
|
| WR1-A Selecta | Mannheim | wood/celluloid veneers | Plain white celluloid faced slide & back - 1 of 5 WR models with higher quality finish & higher retail price - read more ... |
|
|
| XL-10 (Bilateral) | Log-Log | wood/paper covered by clear plastic | Later reissued version of S.B.10 with divisions on 2 & 1 cycle A & D on back of stock redrawn to run from 0.01-0.1-1.0 & 0.1-1.0 + famously named Fastest slide in the Whitehall by Arthur C. Clarke - read more ... |
|
|