A slide rule is a hand-operated mechanical calculator consisting of slidable rulers for conducting mathematical operations such as multiplication, division, exponents, roots, logarithms, and …

This is a composite gallery of simulated slide rules that may be manipulated on your screen by use of your mouse, as if the slide rule is actually in your hand.

Sep 9, 2025 · Line up the right numbers on the scale, and you can multiply any two numbers together, with much less math than you would use with pencil and paper. Notice the gaps …

Use our Slide Rule Calculator to multiply or divide numbers instantly. Fast, accurate, and user-friendly online calculator for everyone.

Interactive slide rule simulator - Experience the classic engineering calculator online. Learn multiplication, division, and squares using authentic logarithmic scales.

Sawyer Mfg Company - Slide Rule Tool for Pipe Cutting & Measuring - Ruler to Easily Determine Pipe Thickness, Weight & Cutback Lengths with Oxygen & Acetylene Settings for Bevels - …

This program replicates the most common types of slide rules: Straight, circular, spiral and cylindrical. Dozens of scales are included and numerous features that could never exist on a …

Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more.

The simulator of a basic slide rule (Pickett 160-ES Microline) shown below was created by Derek Ross (code and images, used with permission) using a freeware drag-and-drop javascript …

The slide rule eased the addition of the two logarithmic displacements of the numbers, thus assisting with multiplication and division in calculations. More functionality was later added …