"L"
Scales 

L 
The L scale is a linear log scale used to
obtain the common (log to base 10) of a number on the
fundamental D scale. This scale is normally on the top
or bottom rule, but may be on the slide where it would be
used with the C scale instead. Formula: L = log_{10} X 
LC 
The LC scale is used in electronics
calculations to compute the resonant frequency of an
electrical circuit. It is similar to the H scale, but
using different units. Formula: LC = 1 / ( 2π² × X² ) 
LL 
The LL scale is a loglog scale used to calculate powers. This scale is similar to the LL0  LL3 scale set below, covering the majority of the range of those scales in one scale, so results are less precise. This scale ranges from 1.01 to 10,000. 
LL0 
The LL0 scale is used to raise numbers to
powers greater than one. This is used when the normal
power scales such as A/B, J/K, and F are unsuitable.
These scales allow raising values to noninteger powers. Formula: LL0 = e^{0.001x} 
LL1 
The LL1 scale is used to raise numbers to
powers greater than one. This is used when the normal
power scales such as A/B, J/K, and F are unsuitable.
These scales allow raising values to noninteger powers. Formula: LL1 = e^{0.01x} 
LL2 
The LL2 scale is used to raise numbers to
powers greater than one. This is used when the normal
power scales such as A/B, J/K, and F are unsuitable.
These scales allow raising values to noninteger powers. Formula: LL2 = e^{0.1x} 
LL3 
The LL3 scale is used to raise numbers to
powers greater than one. This is used when the normal
power scales such as A/B, J/K, and F are unsuitable.
These scales allow raising values to noninteger powers. Gauge marks are located at π and τ. Formula: LL3 = e^{x} 
LL/0 
The LL/0 scale (or loglog scales) is an
exponential power scales used to raise values to powers less
than one. Formula: LL/0 = e^{x} 
LL/1 
The LL/1 scale (or loglog scales) is an
exponential power scales used to raise values to powers less
than one. Formula: LL/1 = e^{0.1x} 
LL/2 
The LL/2 scale (or loglog scales) is an
exponential power scales used to raise values to powers less
than one. Formula: LL/2 = e^{0.01x} 
LL/3 
The LL/3 scale (or loglog scales) is an
exponential power scales used to raise values to powers less
than one. Formula: LL/3 = e^{0.001x} 
Ln 
The Ln scale, or natural log scale is used to
determine the nature log of numbers from the fundamental
scales. Formula: Ln = log_{e} X 