• 455 Martinson, Los Angeles
  • 8 (043) 567 - 89 - 30
  • support@email.com
  • 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 in the 1900s
  • Smallest drum (≈ 2.4m) made by LOGA

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You searched for: hemmi frequency
MakerModelTypeMaterialCommentsThumbnail
Hemmi301Frequency Responsebamboo/celluloid veneers

Design invented by Prof. Keisuke Izawa of Tokyo Institute of Technology for frequency responses of physical systems where transfer functions can be linear & exponential + extremely complicated to use with multiple cursors + metal backing plate + see also advanced sibling 301A 

Hemmi301AFrequency Responsebamboo/celluloid veneers

Designed  by Prof. Keisuke Izawa of Tokyo Institute of Technology for frequency responses of physical systems where transfer functions can be linear & exponential + overlay co-developed with Tomoaki Morinaga especially for quadratic factor + extremely complicated to use with multiple cursors/overlay +  metal backing plate + see also “basic” sibling 301