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: Hemmi | |||||
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1 | Enhanced Mannheim | bamboo/celluloid veneers | Branded on front but no discernable model no. but part of obsolete 1-18 range of model no.'s abandoned circa 1930 + cm scale in well of stock + metal backing plate & paper table of conversion factors/scale on bac |
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1/1 | Enhanced Mannheim | bamboo/celluloid veneers | Part of obsolete 1-18 range of model no.'s abandoned circa 1930 + metal backing plate & paper table of conversion factors/scale on back |
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101A | Demonstration Enhanced Mannheim | wood/painted | Classroom version for models 40RK & 43A - Sun was added later as company logo |
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130 | Darmstadt | bamboo/celluloid veneers | Branded in well but no discernable model no. + unusually extra S,T scales on the bottom side edge + metal backing plate & plastic table of conversion factors on back |
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135 | Pocket Darmstadt | bamboo/celluloid veneers | metal backing plate |
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136 | Pocket Darmstadt | bamboo/celluloid veneers | unusually extra S,T scales on the bottom side edge + metal backing plate & plastic table of conversion factors on back |
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149A | Pocket Log-Log | bamboo/celluloid veneers | branding on back of stock + A model no. suffix = additional catalogue/bookkeeping listing but otherwise no change to 149 |
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255D | Electro Hyperbolic | bamboo/celluloid veneers | For Electrical Engineering + D model no. suffix = with DI scale but otherwise replaced 155 + metal end braces |
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257L | Chemical | wood/celluloid veneers | model name suffix L probably refers to the LM scale for calculating Logarithmic Mean Temperature that replaced the F(t) scale found on the original 257 + special gauge marks for determining atomic & molecular weights |
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259D | Log-Log | bamboo/celluloid veneers | branding on back of stock + metal end braces + D model no. suffix = with DI scale but otherwise identical to 259 |
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260 | Log-Log | bamboo/celluloid veneers | metal end braces + WULFF & UNIVERSITY with branding stamped into both side edge |
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2640 | Enhanced Mannheim | bamboo/celluloid veneers | Reissued version of model 50W for post 1940 2600 series with the K scale unusually delegated to back of slide + metal backing plate & plastic table of conversion factors on back |
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2664S | Technical | bamboo/celluloid veneers | Cobranded with Masoneilan + S model no. suffix possibly = 2664 with supplementary green coloured CIF scale + metal backing plate & plastic table of conversion factors on back |
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2690 | Stadia Topography - 360 | bamboo/celluloid veneers | metal backing plate & plastic table of conversion factors on back |
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275 | Desktop Hyperlog Electro (ver 1) | bamboo/celluloid veneers | Desktop version of 25cm model 255 - § scales on front face for converting degrees into radians & vice-versa - supposedly for Advanced Electrical Engineers. |
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279 | Desktop Expert Mechanical Engineer | bamboo/celluloid veneers | metal end braces - desktop version of 259 |
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30 | Lilliput Enhanced Mannheim | wood/metal/celluloid veneers | Promotional model for Swedish company + metal backing plate |
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30 | Lilliput Enhanced Mannheim - late | bamboo/celluloid veneers | Metal backing plate |
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301 | Control Engineering | bamboo/celluloid veneers | Design invented by Prof. Keisuke Izawa of Tokyo Institute of Technology for frequency responses of physical systems where transfer functions can be linear & exponential + extremely complicated to use with multiple cursors + metal backing plate + see also advanced sibling 301A |
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301A | Control Engineering | bamboo/celluloid veneers | Designed by Prof. Keisuke Izawa of Tokyo Institute of Technology for frequency responses of physical systems where transfer functions can be linear & exponential + overlay co-developed with Tomoaki Morinaga especially for quadratic factor + extremely complicated to use with multiple cursors/overlay + metal backing plate + see also “basic” sibling 301 |
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32 | Lilliput Enhanced Mannheim | bamboo/celluloid veneers | Identical to model 30 but given model no. 32 because of magnifying cursor + red logo on right-hand end of slide = retailer's trademark + metal backing plate |
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32R (POST 1441) | Lilliput Enhanced Mannheim | bamboo/celluloid veneers | Model no. suffix R = with reciprocal CI scale (suffix later dropped) + co-branded on back POST 1441 + metal backing plate |
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34 | Pocket Mannheim | bamboo/celluloid veneers | metal backing plate stamped with “G. DIKKES & Co N.V.” |
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34P | Pocket Mannheim | bamboo/celluloid veneers | significance of the P model no suffix not known + metal backing plate stamped with “BYGGNADS AB JOHAN GUSTAFON & SONER” |
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34R | Pocket Enhanced Mannheim | bamboo/celluloid veneers | branded on front but no discernable model no. + R model no. suffix = basic 34 with reciprocal CI scale + metal backing plate |
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34RK | Pocket Rietz-like | bamboo/celluloid veneers | RK model no. suffix = basic 34 with reciprocal CI & K scale + metal backing plate |
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34T | Pocket Enhanced Mannheim | bamboo/celluloid veneers | T model no. suffix possibly = basic 34 with Trig scales + metal backing plate stamped with “SUN” |
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34T | Pocket Enhanced Mannheim - late | bamboo/celluloid veneers | T model no. suffix possibly = basic 34 with Trig scales + plain (no SUN or ASEA stamping) metal backing plate |
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35 | Lilliput Enhanced Mannheim | bamboo/celluloid veneers | metal backing plate stamped BOFORS |
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40 | Enhanced Mannheim | bamboo/celluloid veneers | branded on front face but no discernable model no. + metal backing plate & plastic table of conversion factors on back |
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40RK | Rietz-like | bamboo/celluloid veneers | RK model no. suffix = basic 40 with reciprocal CI & K scale + metal backing plate |
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50 | Enhanced Mannheim | bamboo/celluloid veneers | same as 4x models but with an extra CI scale + metal backing plate |
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64/3 | Enhanced Mannheim | bamboo/celluloid veneers | /3 model no. suffix = 3-line cursor + later siblings |
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642T | Rietz | bamboo/plastic/celluloid veneers | Wider version of 64T Extended Rietz + T model no. suffix possibly = basic 64 with extra Trig scales + cobranded Dutch retailer Ahrend on front face + table of constants & green pads on back + earlier thinner 64T sibling - also sold as Ahrend 643T |
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64T | Rietz | bamboo/celluloid veneers | considered extended version of the basic Rietz 64 because of additional scales + T model no. suffix possibly = basic 64 with extra Trig scales + later broader 642T sibling + metal backing plate & plastic table of conversion factors on back |
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70 | Desktop Improved Rietz | bamboo/celluloid veneers | Branded in well but no discernable model no. + table of conversion factors on back - also sold as Tamaya 4480 |
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74 | Pocket Rietz | bamboo/celluloid veneers | branding on back of stock + metal backing plate |
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74 | Pocket Rietz - late | bamboo/celluloid veneers | Considered an improved layout because of extra peripheral hairlines on cursor + metal backing plate + Dutch retailer Ahrend printed on back |
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80/1 | Electro - imperial | bamboo/celluloid veneers | branded in well but no discernable model no. + W,V scales in well + /1 model no. suffix = 1-line cursor + metal backing plate |
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80/3 | Electro - metric | bamboo/celluloid veneers | branded in well but no discernable model no. + W,V scales in well + /3 model no. suffix = 3-line cursor + metal backing plate & plastic table of conversion factors on back |
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86/3 | Pocket Electro | bamboo/celluloid veneers | branded in well but no discernable model no. + W,V scales in well + /3 model no. suffix = 3-line cursor + metal backing plate & plastic table of conversion factors on back |
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Baseball | Pocket Sport | plastic | Probably a promotional give away for a professional baseball team but model is listed in Hemmi Catalogue 6911 + example calculations in instructions use baseball data from 1965 season |
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Foxboro | Pipe Flow & Valve Sizing - metric | plastic | Maker's branding only stamped into cursor + 3rd party dual branding with econosto n.v. + green end braces & Reynolds No. on back + |
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P24 | Student Technical | plastic | P model no. prefix = plastic + green coloured end braces |
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P253 Vectolog | Log-Log | plastic | Plastic version of 264 marketed with an "Arrow Feather Shape" for easy/smooth operation + grey end braces on back |
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P261 | Log-Log | plastic | Green end braces & cursor trim |
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P280 | Darmstadt-like two-tone | plastic | |||
P281 | Rietz-like two-tone | plastic | |||
P40RK | Enhanced Mannheim | plastic | Dark-grey end braces with cursor windows |
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P45K | Technical | plastic | P model no. prefix = plastic & K model no. suffix = addition of K scale to basic 45 but other than being open-frame, identical to 45K + green coloured end braces |
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P45S | Technical | plastic | All plastic version of 45K + /S model no. suffix = simplified version of P45K |
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