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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
Unusual non-logarithmic squaring desktop QR 41 model by Dennert & Pape (D&P)
Colour combinations slide rule for Interior Designers
Professor Fuller’s Drum Calculator from 1878 - made by W.F. Stanley
Modern Kienzle wristwatch with slide rule bezel calculator
Ruxton Multi-Vider 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
Design for this Antenna Radar Beam Pattern Detection slide rule was classified during WWII by UK & US governments - made by Lawrence
Makeba Kombinator pencil & slide rule
Rare Carbic-made Fischer Calculator
Specialist slide rule for a national home cable radio broadcasting system offered in The Netherlands from 1930 to1970
Smallest drum (≈ 2.4m) made by LOGA

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