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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
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Unusual non-logarithmic squaring desktop QR 41 model by Dennert & Pape (D&P)
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Colour combinations slide rule for Interior Designers
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Professor Fuller’s Drum Calculator from 1878 - made by W.F. Stanley
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Modern Kienzle wristwatch with slide rule bezel calculator
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Ruxton Multi-Vider 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
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Design for this Antenna Radar Beam Pattern Detection slide rule was classified during WWII by UK & US governments - made by Lawrence
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Makeba Kombinator pencil & slide rule
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Rare Carbic-made Fischer Calculator
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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 LOGA