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Sliderule Emulator with Equation Solver
9 February 2026 | by Hemmi/Post 1460 Versalog Slide Rule
A classic slide rule replica implemented in JavaScript. All scales are programmatically drawn from reverse-engineered mathematical equations.
How to Use
- Drag the rule or cursor with your mouse
- Scroll with mouse wheel to zoom in/out
- Right-click on cursor or scale to enter values:
- Numbers:
3.14 - Constants:
pi,e - Degrees:
2:30:26
- Numbers:
- Use the Equation feature to solve mathematical expressions
- Toggle Markings and Display options in the control panel
One Response to “Sliderule Emulator with Equation Solver”
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Wow, I still had my slide rule when I packed up to move back to Illinois the end of Sept. 2025. Also ran across my Sharp EL 5100 calculator, which doesn’t work any more…bummer! Great post!!!!!! AA4OO de KB5UKT Mike