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INACCURACIES INVOLVED IN READING VALUES OFF A NOMOGRAPH.  OF COURSE WE HAVE
NO NEED TO KNOW ANY OF THESE MEASUREMENTS OR CALCULATIONS TO MORE THAN ONE
DECIMAL PLACE.  THE VALUE OF THE WHOLE PROCESS IS TO ESTIMATE THE AMOUNT OF
SAG WE CAN EXPECT AT A SAFE WORKING TENSION FOR A GIVEN WIRE SIZE.  ED.
PERHAPS THE REVISED DRAWING SHOWN IN FIGURE 1 OF THIS CORRESPONDENCE WILL
HELP REDUCE THE CONFUSION OVER THE USE OF THE NOMOGRAPH AS WELL AS SHOW THE
DISTANCE THAT SHOULD BE USED IN EQUATIONS 1 AND 2.  EITHER EQUATION 1 OR
EQUATION 2 WILL YIELD A RESULT THAT IS MORE ACCURATE THAN IS POSSIBLE FROM
THE NOMOGRAPH.  EVEN WITH A SIMPLE FOUR FUNCTION POCKET CALCULATOR,
SUBSTITUTING VALUES INTO EQUATION 2 MAY BE MUCH QUICKER, SIMPLER, AND LESS
ERROR PRONE THAN READING VALUES FROM THE NOMOGRAPH.  WHILE RESEARCHING
THESE CALCULATIONS, I FOUND AN IEEE TUTORIAL ON THE TOPIC AT WWW. IEEE TPC.
ORG/IEEE TPCTUTORIAL SAGTENSION CALCS.  PDF.  I FOUND THIS TUTORIAL TO BE
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