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