• 455 Martinson, Los Angeles
  • 8 (043) 567 - 89 - 30
  • support@email.com
  • Rare Otis King Model K - white scales on black background
  • Pocket Hexadecimal Slide Adder for Computer Programmers
  • Post 1824 Dring & Fage Alcohol Gauging Rule
  • Darnley’s Rotable Lightning Calculator/Pencil Case
  • Lawrence Antenna (classified by UK & US during WWII) for Radar Beam Pattern Detection
  • Makeba Kombinator pencil & slide rule
  • Rare Carbic-made Fischer Calculator
  • For Calculating Strength of Liquids in Twaddells !!
  • PTT rule for Cable Radio (Signal Loss/dB)
  • Smallest drum (≈ 2.4m) made by LOGA

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Tip: separate keywords (implict AND) by a space or a comma and if needed, limit the search by adding keywords proceeded by a hyphen: e.g. -Faber, -plastic. Phrases in quotes may also be used.

Search papers

Interested in finding out more out about such calculating wonders? Then try one of the slide rule related articles (often light-hearted) I have published.
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Search results: Click on any listed Model for its full specification OR hover over its "Thumbnail" (if shown) for a pop-up enlargement

You searched for:
ModelTypeMaterialCommentsThumbnail
520H4713 Refrigerant plastic

No slide

Danfoss 520H4713
Calculator Heating flue gas losses plastic

Calculations based on a standard calorific value of fuel oil - back of calculator gives fuel oil nozzle capacities

Danfoss Calculator
(NoName) Pocket Refrigerant - early plastic

No slide

Danfoss NoName Pocket Refrigerant
(NoName) Refrigerant plastic

No slide

Danfoss NoName Refrigerant
RT.00.A1.00 Refrigerant plastic

No slide

Danfoss RT.00.A1.00
RT.00.A2.00 Refrigerant plastic

No slide

Danfoss RT.00.A2.00
RT.0X.A5.00 Refrigerant plastic

No slide

Danfoss RT.0X.A5.00