iSlideRule Scales - B
"B" Scales
B
The B scale is identical to the A scale, but is normally located on the top of the slide, rather than on one of the rules.   It is normally associated with the C fundamental scale for reading square roots or squared values.

Various gauge marks are located on this scale at π, π/4, τ, and M (100/π)

Formula: B = X²
BI
The BI scale is a reciprocal B scale, related to the C scale in the same fashion that the AI scale is related to the D scale.

Gauge marks are located at π and τ.

Formula: BI = 1 / (X²)

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