Scales (Slide Rule): Difference between revisions

Jump to navigation Jump to search
Added photo showing a typical scale layout.
(Set first of pictures to illustrate operation. (linear scales))
(Added photo showing a typical scale layout.)
 
Line 1: Line 1:
[[File:FC 67-87 Rb Rietz.jpg|thumb|The Faber-Castell 57/87 Rb Rietz rule, showing both scale names (on the left side) and self documenting descriptions (on the right side).]]
The primary means of calculation on all slide rules, a '''scale''' is a number line arranged in a way that facilitates certain operations when measured against other scales.  Most scales are meant to multiply numbers together, accomplished by arranging the marks in a logarithmic layout, with further adjustments based on the particular operation desired.  The oldest calculating tool to use such scales is the "Gunter rule" which had a single logarithmic scale from 1 to 10, which could be measured by calipers for the multiplication process.  Almost all slide rules have at least four scales in common: A (B C) D, which will be explained below.
The primary means of calculation on all slide rules, a '''scale''' is a number line arranged in a way that facilitates certain operations when measured against other scales.  Most scales are meant to multiply numbers together, accomplished by arranging the marks in a logarithmic layout, with further adjustments based on the particular operation desired.  The oldest calculating tool to use such scales is the "Gunter rule" which had a single logarithmic scale from 1 to 10, which could be measured by calipers for the multiplication process.  Almost all slide rules have at least four scales in common: A (B C) D, which will be explained below.


Navigation menu