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Maker | Model | Type | Material | Comments | Thumbnail |
Aristo | 10071 OSRAM | Lighting - System Herbrechtingen | plastic | Specially commissioned by German lighting company OSRAM for calculating for calculating lifespan of filament lightbulbs + Table of values on back - see also later & wider version |
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Aristo | 10077 RoHi-GRS | Pocket Textile | plastic | Specially commissioned & extra wide by now defunct German Textile company Sartorius Werke AG + nomogram & conversion table on back |
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Aristo | 10133 Philips Cinema | Film Projection | plastic | Specially commissioned by multinational Philips for film projection in cinemas + many film-related gauge marks |
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Aristo | 10176 Ahrend | Wire Rope | plastic | Slide chart specially commissioned by Dutch Office Supplier Ahrend for selecting fit-for-purpose wire rope with fibre core but based on a Shell (BPM) copyrighted design (MESC 1958) |
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Aristo | 10181 F.C. Bayerlein | Pocket Basic | plastic | Specially commissioned by defunct German textile company F.C. Bayerlein + many conversion style gauge marks |
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Aristo | 30050 Lindell "55" | Desktop Transversal Planimeter | metal/plastic | Specially commissioned ruler by Finnish stationers Ab Herman Lindell Oy - for measuring distances/areas - cursor extension suggests results were transposed for further working - name Herman Lindell + “import” & “copyrighted” in Finnish on the back |
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Aristo | 40111 E Shell Chemicals | Rubber | plastic | Slide chart specially commissioned by German subsidiary of Shell Chemicals for general rubber characteristics on front but specifically for Cariflex brand of isoprene rubber (IR), butadiene rubber (BR) & styrene butadiene rubber (SBR) on back + E suffix to model no. suggests versions made in other languages |
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Aristo | 40126 Oil Rule | Petroleum - two-tone System Dr. Schmeling | plastic | Specially commissioned by German refinery & chain of garages Erdölwerke Frisia AG for crude oil related calculations + many crude oil related gauge marks & formulas/extra information on back- |
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Aristo | 40152 SMITH TOOL | Pipe Flow - hybrid | plastic | Combined slide rule/slide chart specially commissioned by now defunct tool maker Smith International Deutschland GmbH |
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Aristo | 60115 HOHLUX | Photography | plastic/metal | Specially commissioned for German photographic suppliers Hoh & Hahne - HOHLUX was one of their band names. |
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Aristo | 60126 RADAR-WIND | Desktop Military Artillery Range Finding/Meteorology | plastic/metal | Specially commissioned by Bundesamt für Wehrtechnik und Beschaffung (BWB) as modern day mit Strichteilung version (inner scales calibrated in 6400 milliradians or MILS) of High Altitude Calculator for German Armed forces (NATO NSN No.: 6660-12-140-6737) for global missile trajectories or possibly jet stream & its effect on missiles/planes flying at high altitude |
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Aristo | 60147 Waerme- und Dampfpreis-Kalculator | Heating Oil Fuel Prices (ver. 4) | plastic | Specially commissioned by oil major ESSO - 2 nomograms for heating oil & D&P/Aristo co-branding on back |
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Aristo | 60168 Stahlgewichtsrechner | Steel Weight Calculator | plastic | Specially commissioned & registered design by German steel foundry Stahlwerke Bochum & Lichtenberg for calculating weight of steel bars, sheets & strips + Table of factors on back of envelope |
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Aristo | 60190 Gradtag | Desktop K Factor Heating Oil Supply | plastic | Specially commissioned by BP Germany for calculating supply requirements of household heating/fuel oil - K Factor is a way of showing (litres/degree day) how fast a consumer uses heating oil (analogy = fuel consumption of a car) |
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Aristo | 80107 BP | Pocket Heating Oil Stack-Loss | plastic | Specially commissioned by oil major BP for calculating stack-loss efficiency in a heating system running on heating oil. |
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Aristo | 80121 OSRAM | Pocket Lightning Conversion | plastic | Slide chart specially commissioned by German lighting company OSRAM for gas-filled (front) & vacuum-filled (back) lightbulbs |
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Aristo | 80142 AEG | Pocket A.C. Power Factor Electro | plastic | Specially commissioned by German maker of electrical equipment AEG based on model 89 body but with top & bottom scales on front face replaced by a two-part Cos-Phi power factor scale + AEG Vibrationstechnik & cursor window + 1 hairline in back |
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Aristo | 80148 Karl-Heinz Poser | Pocket Ophthalmic - System Poser | plastic | Specially commissioned by Karl-Heinz Poser apparently for lens adjustment in ophthalmology |
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Aristo | 80161 Riener | Pocket Ophthalmic - System Dr. Reiner | plastic | Specially commissioned by a German Dr. Reiner for calculating correction needed for patients suffering from presbyopia (inability to focus on nearby objects) + table on back |
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Aristo | 90107 OSRAM | Lighting | plastic | Specially commissioned by German lighting company OSRAM for calculating for calculating lifespan of filament lightbulbs + Table of SCE values on back - see also earlier & narrower version |
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Aristo | 90117 AQUA-MATH | Tobacco - two tone | plastic | Specially commissioned by now defunct German maker of machines for tobacco industry Hauni Maschinenbau for dry & water retained calculations related to raw tobacco & cigarettes |
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Aristo | 90118 Dosierwert-Rechner | Agriculture - System W. Lemke | plastic | Specially commissioned by now defunct German agriculture tool maker specialising in nozzles W. Schaumlöffel for calculating the correct dosage for protective spraying of plants/crops + heavy duty (industrial) chunky plastic & unusual slide design/use for just line up arrows + table of conversion factors for prevailing wind on back |
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Aristo | 90184 BAU-STAHLGEWERBE | Steel | plastic | Specially commissioned by German steel foundry BAU-STAHLGEWERBE for calculating sizes of various steel products |
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Aristo | 90192 Rieter | Textile | plastic | Specially commissioned by Swiss company Rieter suppling machines/systems for making yarn + specialist scale in well of stock + cm scale & Table of constants on back |
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