• 455 Martinson, Los Angeles
  • 8 (043) 567 - 89 - 30
  • support@email.com
  • ARISTO 90107 specially commissioned model for calculating the lifespan of filament lightbulbs
  • Koch, Huxhold & Hannemann (KHH) - made the surprising System Korte slide rule that does addition & subtraction
  • Smallwood Folding Shoe Sizing Stick in metric for French shoe sizes 10-48 in increments of a Paris point (⅔ cm)
  • Lawrence MIT Antenna slide rule for radar antenna performance was classified during WWII by UK & US governments
  • ALRO-made ruler unusually with a cursor for analysing ECG printouts of the cardiac Sinus Rhythms
  • Hatters Gauge - for measuring the size of a hat but unusually calibrated in metric & imperial
  • Glovers Rule - for measuring the length of a glove in imperial inches
  • Unusual non-logarithmic QR 41 military model by Dennert & Pape (D&P) for training anti-aircraft gunners
  • Colour combinations slide rule made by German WH-Wohnen for Interior Designers
  • Professor Fuller’s Drum Calculator from 1878 - made by W.F. Stanley
  • Modern wristwatch with slide rule bezel calculator made by German maker Kienzle
  • Ruxton made Multi-Vider combined drop-lead pencil & slide rule
  • Rare Otis King Model N for Retail & Monetary with white scales (422 & 424) on a black background
  • Darnley’s Rotable Lightning Calculator/Pencil Case calculating aid
  • Makeba made Kombinator combination pencil & slide rule
  • Rare Carbic-made Fischer Calculator slide rule
  • Specialist slide rule for a national home cable radio broadcasting system offered in The Netherlands from 1930 to1970
  • Smallest drum (≈ 2.4m) made by renowned Swiss maker LOGA

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You searched for: aristo -special
MakerModelTypeMaterialCommentsThumbnail
AHREND (Wed. J. Ahrend & Zoon)435061 (845 Commerz I) Pocket Businessplastic

OEM by ARISTO with Aristo Commerz I in well + Ahrend co-branding with model no. in back

AHREND (Wed. J. Ahrend & Zoon)435064 (89)Pocket Rietzplastic

OEM by ARISTO + reversed inch scale, cursor window with 1 hairline, Ahrend branding & closed Dutch industrial motor manufacturer De Industrie in back

AHREND (Wed. J. Ahrend & Zoon)690 (89 RIETZ )Pocket Rietzplastic

OEM by ARISTO + reversed inch scale, cursor window with 1 hairline & Ahrend branding in back

AHREND (Wed. J. Ahrend & Zoon)691 (99 Rietz)Rietzplastic

OEM by ARISTO with Aristo-Rietz & D&P in well + inch scale & Ahrend co-branding with model no. in back

AHREND (Wed. J. Ahrend & Zoon)694 (0968 Studio)Technical/Log-Logplastic

OEM by ARISTO with Aristo Studio & Ahrend No. 694 co-branding on front

AHREND (Wed. J. Ahrend & Zoon)699 (0905 Commerz)Business - earlyplastic

OEM by ARISTO with Aristo-Commerz on front + Ahrend co-branding with model no. in back

AHREND (Wed. J. Ahrend & Zoon)703 (0970 MultiLog)Technical/Log-Logplastic

OEM by ARISTO with Aristo MultiLog + Ahrend 703 co-branding on front

Aristo01068 Studio Desktop Technical/Log-Log two-toneplastic

Extra wide ​- see also smaller siblings & pocket sibling

Aristo01070 MultiLog Desktop Technical/Log-Logplastic

Extra wide + Multilog v/s Studio = extra LL00 & LL0 scales - see also smaller sibling 

Aristo0602Pocket Basic Retail two-toneplastic

Leading zero in model no. seems out of place + probable promotional give away as I.E.O. Breda printed in gold on case  

Aristo0901 JuniorTechnical two-tone (ver. 2)plastic

Part of a Schools & Vocational series but later version with additional K scale

Aristo0902 JuniorTrigTechnical two-toneplastic

Part of a Schools & Vocational series

Aristo0903 LL ScholarTechnical/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

Aristo0903 LL ScholarTechnical/Log-Log two tone (ver. 2)plastic

Part of a Schools & Vocational series + LL suffix = Log Log + later version with additional BI & LL1 scales

Aristo0903 ScholarRietz-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

Aristo0903 ScholarRietz-like two tone (ver. 3)plastic

Part of a Schools & Vocational series + later version with additional BI scale 

Aristo0903 VS ScholarTechnical 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

Aristo0903 VS-2 ScholarTechnical 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 

Aristo0906 LL BiScholarTechnical/Log-Logplastic

Part of a Schools & Vocational series + LL suffix = Log Log & Bi prefix = an S scale on stock & slide - see also demonstration slide projector sibling

Aristo0908 TriLogTechnical/Log-Log two tone (ver. 1)plastic

Part of a Schools & Vocational series + early version with T1 & T2 scales

Aristo0929 MultiRietzTechnical two-toneplastic

Later reissued with amended layout as MultiTrig version 

Aristo 0929 MultiTrigTechnical two-toneplastic

Reissue with amended layout of earlier MultiRietz version

Aristo0968 StudioTechnical/Log-Log two-tone (ver. 1)plastic

Later version has T1 & T2 scales

Aristo0968 StudioTechnical/Log-Log two-tone (ver. 2)plastic

Earlier version has no T1 & T2 scales

Aristo0969 StudioLogTechnical/Log-Log two-toneplastic

Extra wide body & impressive complement of scales

Aristo0970 MultiLogTechnical/Log-Log two-toneplastic

Extra wide + Multilog v/s Studio = extra LL00 & LL0 scales - see larger desktop sibling 

Aristo0971 HyperboLogLog-Log Hyperbolicplastic

Rich complement of scales

Aristo101 Junior Demonstration OHP School/Technicalclear & coloured plastic

Overhead projector version for model 0901 - see also Classroom version - part of a Schools & Vocational series

Aristo1055 Commerz IDesktop Businessplastic

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 ​

Aristo1067 U DarmstadtDesktop Darmstadtplastic

Co-branded D&P name in well of stock - ​inch scale on back

Aristo1067 U DarmstadtDesktop Darmstadtplastic

​inch scale on back

Aristo109 RietzDesktop Rietzplastic

Co-branded D&P name in well of stock​

Aristo168 Studio Demonstration OHP Technical/Log-Logclear & coloured plastic

Overhead projector version for models 868 & 0968 - Studio = range for more technical disciplines

Aristo206/1&2 BiScholarDemonstration School 35mm Slide Projection Settransparent 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

Aristo301 Junior Demonstration School/Technicalmetal/plastic

Later Classroom version for model 0901 - see also OHP version - part of a Schools & Vocational series

Aristo303 LL Scholar Demonstration School/Log-Logmetal/plastic

Later Classroom version for model 0903 LL - Scholar = general schools range

Aristo604 Prozent-RechnerPocket Basic Retailplastic

Mark-up & discount percentage scales

Aristo615 AviatAviationplastic/metal

For calulating speed, time, distance & fuel consumption + Co-branded D&P name on back

Aristo620Basicplastic

Mini finger holes to help turn inner disc

Aristo622 CalculatorEnhanced Mannheim without Trig scales two-toneplastic

Good for basic calculations but missing Trig scales 

Aristo623 Commerz IIIBusiness two-toneplastic

Layout festooned with guage marks for imperial weights & measures 

Aristo670 NSUPocket Keyring/Time-Speed-Distance Travel Calculatorplastic/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 ​

Aristo803 MonoRietzPocket Rietz two-toneplastic

Gets its Mono name from all scales on front face + chrome pouch clip … read more 

Aristo810 PuckLilliput Enhanced Rietz-likeplastic

1 mini-cursor window in back

Aristo812 Simplex Pocket Enhanced Mannheimplastic

Co-branded D&P name in well of stock + mini-cursor window & CALTEX branding in back

Aristo815 ElektroPocket Electroplastic

Unusually W & V scales on front face

Aristo860Pocket Darmstadtplastic

Unusual stripped down cheaper version of 867 U (hence box + instructions) reputedly for other companies/makers to add their own branding 

Aristo867 UPocket Darmstadtplastic

Aristo Darmstadt printed on back

Aristo867 UPocket Darmstadt - earlyplastic

Aristo Darmstadt & Dennert & Pape Hamburg printed on back

Aristo868 StudioPocket Technical/Log-Log two-tone (ver. 1)plastic

See also larger siblings & desktop sibling

Aristo868 StudioPocket Technical/Log-Log two-tone (ver. 2)plastic

See also larger siblings & desktop sibling

Aristo89Pocket Rietzplastic

Cursor window + 1 hairline & company logo for German-based company Nilos producing conveyor belt equipment in back

Aristo89 RietzPocket Rietzplastic

Inch scale + cursor window + 1 hairline & sieve size table for defunct German wire weaving company F.  Oberdorfer in back

Aristo890 RietzPocket Rietzplastic

Compared to sibling twin model 89 has magnifying cursor & peripheral hairlines  

Aristo911 SimplexMannheimplastic
Aristo914 ElektroElectroplastic

V & W scales in well + inch scale on back + Aristo (well) & D&P (back) co-branding - later replaced by 915

Aristo915 ElektroElectroplastic

Replaced 914 + rubber feet on back

Aristo918 Kanalisation Pipe Flow in sewerage pipes - System Vicariplastic

Pipe flow calculations based on simplified Kutter formula with n=0.35 circular and ovoid sewers with h/b = 3/2

Aristo939 StahlbetonReinforced Concrete - System Göttsch plastic

Version for 1200 - 2600 range + Table of factors & pictograms on back

Aristo940 Stahlbeton (DIN 1045)Reinforced Concrete - System Göttschplastic

Extra wide body & very complex to use + Table of factors & pictograms on back

Aristo945 PraktikerBusinessplastic

PRAKTIKER & Dennert & Pape Hamburg in well + inch scale on back

Aristo965 Commerz IIBusinessplastic
Aristo968 StudioTechnical/Log-Log two-tone (ver. 1)plastic

Early version with unusual edge scales & without D scale added to later version  

Aristo968 StudioTechnical/Log-Log two-tone (ver. 2)plastic

Later version with additional D scale

Aristo970 MultiLogTechnical/Log-Log two-tone plastic

Multilog v/s Studio = extra LL00 & LL0 scales - see also larger sibling

Aristo99Rietz (ver. 1)plastic

Standard all white closed frame plastic back plate with 2 cursor windows but other versions had clear plastic back plates 

Aristo99Rietz (ver. 2)plastic

Clear plastic closed frame plastic back plate making cursor windows superfluous - other versions had all white plastic back plates  

Aristo99 RietzDemonstration/Display Rietzplastic

100% Geretsried made dummy - slide does not slide - “Ausstellugsmuster” on back

Aristo99 RietzDemonstration/Display Rietz - earlyplastic

100% dummy - slide indented but does not slide - “Ausstellugsmuster” on back

AristoM 66Basic Electronic Calculatorplastic

Non-programmable with 9-digit display

AristoM 85Scientific Electronic Calculator (ver. 1)plastic

Non-programmable with algebraic data entry & 12-digit display

Dennert & Pape (D&P)D 2/28Pocket Enhanced Mannheim - latewood/celluloid veneers

Possibly transitional example before moving to Astralon & Aristo branding + owned by Emiel Gibas

Graphoplex690 aNeperlog Log-Logplastic

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

MARC A.A.F. / MINERVAMinerva No. 5 ElectricienPocket ElectroplasticV & W scales in well of stock - from short lived MARC-Minerva collaboration before Minerva started importing ARISTO slide rules