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Maker | Model | Type | Material | Comments | Thumbnail |
AHREND (Wed. J. Ahrend & Zoon) | 435061 (845 Commerz I) | Pocket Business | plastic | OEM by ARISTO with Aristo Commerz I in well + Ahrend co-branding with model no. in back |
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AHREND (Wed. J. Ahrend & Zoon) | 435064 (89) | Pocket Rietz | plastic | OEM by ARISTO + reversed inch scale, cursor window with 1 hairline, Ahrend branding & closed Dutch industrial motor manufacturer De Industrie in back |
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AHREND (Wed. J. Ahrend & Zoon) | 690 (89 RIETZ ) | Pocket Rietz | plastic | OEM by ARISTO + reversed inch scale, cursor window with 1 hairline & Ahrend branding in back |
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AHREND (Wed. J. Ahrend & Zoon) | 691 (99 Rietz) | Rietz | plastic | OEM by ARISTO with Aristo-Rietz & D&P in well + inch scale & Ahrend co-branding with model no. in back |
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AHREND (Wed. J. Ahrend & Zoon) | 694 (0968 Studio) | Technical/Log-Log | plastic | OEM by ARISTO with Aristo Studio & Ahrend No. 694 co-branding on front |
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AHREND (Wed. J. Ahrend & Zoon) | 699 (0905 Commerz) | Business - early | plastic | OEM by ARISTO with Aristo-Commerz on front + Ahrend co-branding with model no. in back |
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AHREND (Wed. J. Ahrend & Zoon) | 703 (0970 MultiLog) | Technical/Log-Log | plastic | OEM by ARISTO with Aristo MultiLog + Ahrend 703 co-branding on front |
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Aristo | 01068 Studio | Desktop Technical/Log-Log two-tone | plastic | Extra wide - see also smaller siblings & pocket sibling |
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Aristo | 01070 MultiLog | Desktop Technical/Log-Log | plastic | Extra wide + Multilog v/s Studio = extra LL00 & LL0 scales - see also smaller sibling |
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Aristo | 0602 | Pocket Basic Retail two-tone | plastic | Leading zero in model no. seems out of place + probable promotional give away as I.E.O. Breda printed in gold on case |
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Aristo | 0901 Junior | Technical two-tone (ver. 2) | plastic | Part of a Schools & Vocational series but later version with additional K scale |
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Aristo | 0902 JuniorTrig | Technical two-tone | plastic | Part of a Schools & Vocational series |
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Aristo | 0903 LL Scholar | Technical/Log-Log two tone (ver. 1) | plastic | Part of a Schools & Vocational series + LL suffix = Log Log + version without BI & LL1 scales but with cm & inch scales on back |
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Aristo | 0903 LL Scholar | Technical/Log-Log two tone (ver. 2) | plastic | Part of a Schools & Vocational series + LL suffix = Log Log + later version with additional BI & LL1 scales |
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Aristo | 0903 Scholar | Rietz-like two tone (ver. 2) | plastic | Part of a Schools & Vocational series + version with a more Rietz layout (e.g. L scale at top) but without later additional BI scale + cm & inch scales on back |
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Aristo | 0903 Scholar | Rietz-like two tone (ver. 3) | plastic | Part of a Schools & Vocational series + later version with additional BI scale |
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Aristo | 0903 VS Scholar | Technical two-tone (ver. 1) | plastic | Part of a Schools & Vocational series + early version with simplex cursor + VS suffix = “Verschoben Skalen” or folded DF & CF scales |
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Aristo | 0903 VS-2 Scholar | Technical two-tone (ver. 1) | plastic | Part of a Schools & Vocational series + early version without BI scale + VS suffix = “Verschoben Skalen” or folded DF & CF scales + -2 suffix = second issue of VS model now with duplex cursor |
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Aristo | 0906 LL BiScholar | Technical/Log-Log | plastic | Part of a Schools & Vocational series + LL suffix = Log Log & Bi prefix = an S scale on stock & slide - see also demonstration slide projector sibling |
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Aristo | 0908 TriLog | Technical/Log-Log two tone (ver. 1) | plastic | Part of a Schools & Vocational series + early version with T1 & T2 scales |
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Aristo | 0929 MultiRietz | Technical two-tone | plastic | Later reissued with amended layout as MultiTrig version |
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Aristo | 0929 MultiTrig | Technical two-tone | plastic | Reissue with amended layout of earlier MultiRietz version |
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Aristo | 0968 Studio | Technical/Log-Log two-tone (ver. 1) | plastic | Later version has T1 & T2 scales |
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Aristo | 0968 Studio | Technical/Log-Log two-tone (ver. 2) | plastic | Earlier version has no T1 & T2 scales |
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Aristo | 0969 StudioLog | Technical/Log-Log two-tone | plastic | Extra wide body & impressive complement of scales |
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Aristo | 0970 MultiLog | Technical/Log-Log two-tone | plastic | Extra wide + Multilog v/s Studio = extra LL00 & LL0 scales - see larger desktop sibling |
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Aristo | 0971 HyperboLog | Log-Log Hyperbolic | plastic | Rich complement of scales |
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Aristo | 101 Junior | Demonstration OHP School/Technical | clear & coloured plastic | Overhead projector version for model 0901 - see also Classroom version - part of a Schools & Vocational series |
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Aristo | 1055 Commerz I | Desktop Business | plastic | Series of imperial to metric conversion gauge marks on lower front face - s-d-£ scale is folded - inch scale on back - 25cm (no. 955) & 12.5cm (no. 845) versions also made |
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Aristo | 1067 U Darmstadt | Desktop Darmstadt | plastic | Co-branded D&P name in well of stock - inch scale on back |
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Aristo | 1067 U Darmstadt | Desktop Darmstadt | plastic | inch scale on back |
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Aristo | 109 Rietz | Desktop Rietz | plastic | Co-branded D&P name in well of stock |
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Aristo | 168 Studio | Demonstration OHP Technical/Log-Log | clear & coloured plastic | Overhead projector version for models 868 & 0968 - Studio = range for more technical disciplines |
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Aristo | 206/1&2 BiScholar | Demonstration School 35mm Slide Projection Set | transparent plastic/metal | 44nd anniversary gift from Ros - boxed set of two lantern slides specifically for manual feed 35mm photographic slide projector - BiScholar = range where a Sine scale is included on stock & on slide - see also standard 0906 sibling |
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Aristo | 301 Junior | Demonstration School/Technical | metal/plastic | Later Classroom version for model 0901 - see also OHP version - part of a Schools & Vocational series |
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Aristo | 303 LL Scholar | Demonstration School/Log-Log | metal/plastic | Later Classroom version for model 0903 LL - Scholar = general schools range |
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Aristo | 604 Prozent-Rechner | Pocket Basic Retail | plastic | Mark-up & discount percentage scales |
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Aristo | 615 Aviat | Aviation | plastic/metal | For calulating speed, time, distance & fuel consumption + Co-branded D&P name on back |
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Aristo | 620 | Basic | plastic | Mini finger holes to help turn inner disc |
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Aristo | 622 Calculator | Enhanced Mannheim without Trig scales two-tone | plastic | Good for basic calculations but missing Trig scales |
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Aristo | 623 Commerz III | Business two-tone | plastic | Layout festooned with guage marks for imperial weights & measures |
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Aristo | 670 NSU | Pocket Keyring/Time-Speed-Distance Travel Calculator | plastic/metal | NSU = German motorcycle & later car manufacturer - conventional time-speed-distances for motorists with km/hour on front & metric fuel economy Litres/100 km on back + B&W version also made & sibling 671 model calibrated for imperial miles & gallons |
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Aristo | 803 MonoRietz | Pocket Rietz two-tone | plastic | Gets its Mono name from all scales on front face + chrome pouch clip … read more |
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Aristo | 810 Puck | Lilliput Enhanced Rietz-like | plastic | 1 mini-cursor window in back |
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Aristo | 812 Simplex | Pocket Enhanced Mannheim | plastic | Co-branded D&P name in well of stock + mini-cursor window & CALTEX branding in back |
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Aristo | 815 Elektro | Pocket Electro | plastic | Unusually W & V scales on front face |
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Aristo | 860 | Pocket Darmstadt | plastic | Unusual stripped down cheaper version of 867 U (hence box + instructions) reputedly for other companies/makers to add their own branding |
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Aristo | 867 U | Pocket Darmstadt | plastic | Aristo Darmstadt printed on back |
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Aristo | 867 U | Pocket Darmstadt - early | plastic | Aristo Darmstadt & Dennert & Pape Hamburg printed on back |
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Aristo | 868 Studio | Pocket Technical/Log-Log two-tone (ver. 1) | plastic | See also larger siblings & desktop sibling |
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Aristo | 868 Studio | Pocket Technical/Log-Log two-tone (ver. 2) | plastic | See also larger siblings & desktop sibling |
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Aristo | 89 | Pocket Rietz | plastic | Cursor window + 1 hairline & company logo for German-based company Nilos producing conveyor belt equipment in back |
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Aristo | 89 Rietz | Pocket Rietz | plastic | Inch scale + cursor window + 1 hairline & sieve size table for defunct German wire weaving company F. Oberdorfer in back |
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Aristo | 890 Rietz | Pocket Rietz | plastic | Compared to sibling twin model 89 has magnifying cursor & peripheral hairlines |
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Aristo | 911 Simplex | Mannheim | plastic | ||
Aristo | 914 Elektro | Electro | plastic | V & W scales in well + inch scale on back + Aristo (well) & D&P (back) co-branding - later replaced by 915 |
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Aristo | 915 Elektro | Electro | plastic | Replaced 914 + rubber feet on back |
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Aristo | 918 Kanalisation | Pipe Flow in sewerage pipes - System Vicari | plastic | Pipe flow calculations based on simplified Kutter formula with n=0.35 circular and ovoid sewers with h/b = 3/2 |
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Aristo | 939 Stahlbeton | Reinforced Concrete - System Göttsch | plastic | Version for 1200 - 2600 range + Table of factors & pictograms on back |
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Aristo | 940 Stahlbeton (DIN 1045) | Reinforced Concrete - System Göttsch | plastic | Extra wide body & very complex to use + Table of factors & pictograms on back |
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Aristo | 945 Praktiker | Business | plastic | PRAKTIKER & Dennert & Pape Hamburg in well + inch scale on back |
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Aristo | 965 Commerz II | Business | plastic | ||
Aristo | 968 Studio | Technical/Log-Log two-tone (ver. 1) | plastic | Early version with unusual edge scales & without D scale added to later version |
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Aristo | 968 Studio | Technical/Log-Log two-tone (ver. 2) | plastic | Later version with additional D scale |
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Aristo | 970 MultiLog | Technical/Log-Log two-tone | plastic | Multilog v/s Studio = extra LL00 & LL0 scales - see also larger sibling |
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Aristo | 99 | Rietz (ver. 1) | plastic | Standard all white closed frame plastic back plate with 2 cursor windows but other versions had clear plastic back plates |
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Aristo | 99 | Rietz (ver. 2) | plastic | Clear plastic closed frame plastic back plate making cursor windows superfluous - other versions had all white plastic back plates |
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Aristo | 99 Rietz | Demonstration/Display Rietz | plastic | 100% Geretsried made dummy - slide does not slide - “Ausstellugsmuster” on back |
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Aristo | 99 Rietz | Demonstration/Display Rietz - early | plastic | 100% dummy - slide indented but does not slide - “Ausstellugsmuster” on back |
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Aristo | M 66 | Basic Electronic Calculator | plastic | Non-programmable with 9-digit display |
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Aristo | M 85 | Scientific Electronic Calculator (ver. 1) | plastic | Non-programmable with algebraic data entry & 12-digit display |
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Dennert & Pape (D&P) | D 2/28 | Pocket Enhanced Mannheim - late | wood/celluloid veneers | Possibly transitional example before moving to Astralon & Aristo branding + owned by Emiel Gibas |
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Graphoplex | 690 a | Neperlog Log-Log | plastic | Impressive layout of 26 scales - Neper or Np is a logarithmic unit of measurement of physical field & power quantities -+ see comparable sibling model 690 - comparable to ARISTO 0968 |
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MARC A.A.F. / MINERVA | Minerva No. 5 Electricien | Pocket Electro | plastic | V & W scales in well of stock - from short lived MARC-Minerva collaboration before Minerva started importing ARISTO slide rules |