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Hughes-Owens Slide Rules
Part 2 - Models 341 3010 to 341 3738
| Archive Navigation, CLICK on the LOGO to Visit | ||||||
Hughes-Owens 1760 to 1778 |
Hughes-Owens 341 3010 to 341 3738 |
Geotec 341 3010 to 341 3690 |
COMING SOON CLICK to go to the CATALOG Archive |
 HEMMI CLICK to go to the Hemmi/Sun Archive |
 CLICK to go to the POST Archive |
 CLICK to go to the Teledyne Archive |
| Model Number | Date | Description Scales |
Equivalents | Comments |
341 3010  |
1965-1968 | 10" Versalog Ib, 23 scales LL0 LL/0 K DF [ CF CIF CI C ] D R1 R2 L LL/1 LL/2 LL/3 [ TT SecT ST CosS C ] D LL3 LL2 LL1 |
H-O 1777 Geotec 341 3010 Post 1460 |
Versalog Ib, COS scale in green |
341 3050  |
1965-1968 | 5" Versalog Ib, 23 scales LL0 LL/0 K DF [ CF CIF CI C ] D R1 R2 L LL/1 LL/2 LL/3 [ TT SecT ST CosS C ] D LL3 LL2 LL1 |
H-O 1778 Geotec 341 3050 Post 1461 |
Pocket Version of 341 3010 |
| 341 3120 |
1965-1968 | 10" Versatrig, 18 scales K DF [ CF CIF CI C ] D R1 R2 L A [ TT SecT ST CosS C ] D DI |
H-O 1776 Post 1450 T-P 44CA-500 |
Versatrig |
| 341 3130 |
1965-1968 | 10" Vectolog, 18 scales LL3 LL2 DF [ CF CIF CI C ] D L LL1 K A [ B TI2 TI1 SI ] D DI |
Hemmi P253 H-O 1774-00 |
Vectolog |
| 341 3155 |
1965-1968 | 10" Commerce, 17 scales DF [ CF CIF CI C ] D LL P1 P2 A N [ M L S/d C ] D G |
Hemmi P263 | For business applications. PVC plastic |
341 3215   |
1965-1968 | 10" Mannheim, 9 scales A [ B CI C ] D K [ S L T ] |
Hemmi 50W H-O 1771 Geotec 341 3215 Post 1452W T-P 44BA-520 |
Universal Mannheim. |
| 341 3235 |
1965-1968 | 20" Mannheim, 9 scales inches // A [ B CI C ] D K [ S L T ] |
Hemmi 50-20 H-O 1772 |
20" version of 341 3215. Much more massive than comparable K&E N4053-5. |
| 341 3405 |
1965-1968 | 4" Mannheim, magnifying cursor, 8 scales in // A [ B CI C ] D || cm [ S L T ] |
Hemmi 32 H-O 1760 Post 1441 T-P 44DA-410 |
4" version of 341 3215, with magnifying cursor. |
| 341 3425 |
1965-1968 | 5" Mannheim, 9 scales in // A [ B CI C ] D K [ S L T ] - S is read against A |
Hemmi 34RK H-O 1762 Geotec 341 3425 Post 1444RK T-P 44DA-440 |
5" version of 341 3215. |
341 3500   |
1965-1968 | 8" student Mannheim, 10 scales K DF [ CF CI C ] D A [ TI L SI ] |
Hemmi 45RK* Post 1445 |
HoCo and Post are folded at pi; Hemmi 45K is folded at sqrt(10). |
341 3526   |
1965-1968 | 10" student Mannheim, 9 scales A [ B CI C ] D K [ S L T ] |
Hemmi 40RK H-O 1768C Geotec 341 3526 Post 1447 US Blue 1877 |
Student version of 341 3215. |
| 341 3550 |
1965-1968 | 10" Electronics | Hemmi 266 | Electronics |
| 341 3714 |
1965-1968 | Classroom Student, 9 scales A [ B CI C ] D K [ S L T ] |
unknown | 54" classroom slide rule. Made of genuine northern hardwoods. |
| 341 3734 |
1965-1968 | Projection Student, 9 scales A [ B CI C ] D K [ S L T ] |
Post 1447DP | Projection version of 341 3526 student Mannheim |
| 341 3738 |
1965-1968 | Projection Versalog, 23 scales LL0 LL/0 K DF [ CF CIF CI C ] D R1 R2 L LL/1 LL/2 LL/3 [ TT SecT ST CosS C ] D LL3 LL2 LL1 |
Post 1460DP | Projection version of 341 3010 Versalog Ib |
| Archive Navigation, CLICK on the LOGO to Visit | ||||||
Hughes-Owens 1760 to 1778 |
Hughes-Owens 341 3010 to 341 3738 |
Geotec 341 3010 to 341 3690 |
COMING SOON CLICK to go to the CATALOG Archive |
HEMMI CLICK to go to the Hemmi/Sun Archive |
CLICK to go to the POST Archive |
CLICK to go to the Teledyne Archive |
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 . Hughes-Owens and Geotec slide rule data and original HTML copyright 2001 by John Spivey, used with permission. Site Design & HTML contents copyright 1997, 1998, 1999, 2000, 2001, 2004 by Walter Shawlee 2 & the ad hoc Godzilla Graphics Group. |
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