| Chapter 2 | Introduction | Chapter 3 | 

Twist Directions.
 
Technical Terms in Fishing Gear Materials and Gear Fabrication
	"A twine has 'Z' (Right) twist when the strands are twisted from right to left about its axis.
	Note:-In some countries 'Z' twist is called left twist and 'S' twist is called right twist."
	Accessed 03 February 2021 from	 
	
http://aquaticcommons.org/16151/1/FT1.1_005.pdf
Wikidata
	"Z-twist: regular twist, right twist, warp twist, right-hand twist..."
	Accessed 03 February 2021 from	 
	
https://m.wikidata.org/wiki/Q55296380
Dongguan Yufon Textile Materials Co
	"Twist direction – Direction of twist is identified as ‘S’ for left twist and ‘Z’ for right twist."
	Accessed 03 February 2021 from	 
	
http://www.functionyarn.com/products/Yarn/Core_pun_yarn/20.html
Encyclopaedia Britannica
	"When the rope twist is seen to spiral in direction upward to the right as the rope is held vertically, it is designated as right-laid or Z-twist; if upward to the left, as left-laid (S-twist). "
	Accessed 03 February 2021 from	 
	
https://www.britannica.com/technology/rope
National Technical Reports Library
"... right hand warp twill (also called 'Z' twill) ..."
	Accessed 03 February 2021 from	 
	
https://ntrl.ntis.gov/NTRL/dashboard/searchResults/titleDetail/PB81214470.xhtml
Abaca - A Cordage Fiber  USDA
	"The twists as viewed in vertical position are designated by the letter "Z" for a right twist ...."
	Accessed 04 February 2021 from
	
https://archive.org/stream/abacacordagefibe21robi/abacacordagefibe21robi_djvu.txt
RAVENOX Rope
	"Left-laid rope: a rope that is twisted clockwise. Also referred to as S-lay."
	Accessed 05 February 2021 from
	
https://www.ravenox.com/blogs/news/rope-terms
	
Trivantage 
	"Left twist: A 'Z' twist or twist in a clockwise direction."
	Accessed 03 February 2021 from	 
	
https://www.trivantage.com/thread-guide
INTERNET FRANCE (THAILAND)
	Purveyor of Fishing Nets
	"Z TWIST   (Left Twist)"
	Accessed 03 February 2021 from	 
	
http://www.ift-group.biz/netspec.htm
Aircrew Survival Equipmentman 3 6 2
	"The thread to be used on an oscillating type sewing machine is LEFT TWIST (also known as Z twist)."
	Accessed 03 February 2021 from	 
	
https://files.eric.ed.gov/fulltext/ED101081.pdf
	Airframe & Powerplant MECHANICS
	"Machine, machine twist, left twist, or Z-twist indicates a  left-twist thread; "
	Accessed 03 February 2021 from	 
	
https://www.faa.gov/documentlibrary/media/advisory_circular/ac_65-15a.pdf
Coats Thread
	"... and “Z” twist is sometimes referred to as left twist."
	Accessed 04 February 2021 from
	
https://coats.com/en/Information-Hub/Thread-Production
Textile Study Center
	"When a yarn is twisted in a clockwise direction, the fibers form a helical angle at the yarn surface. This angle conforms to the middle part of the letter 'Z'"
	Accessed 03 February 2021 from	 
	
https://textilestudycenter.com/study-of-twist/
National Park Service
	"... the two directions to twist fiber are clockwise (denoted in text with a 'Z') ..."
	Accessed 03 February 2021 from	 
	
https://www.nps.gov/nabr/learn/historyculture/upload/NABRSandal-Report.pdf
Textile Adviser
	"The anticlockwise twist of yarn is called z-twist."
	Accessed 03 February 2021 from	 
	
https://www.textileadvisor.com/2019/05/yarn-twist-degree-of-twist-s-twist-z.html
National Library of Medicine
	"... the strands were twined counterclockwise (Z-twist) to form a cord."
	Accessed 03 February 2021 from	 
	
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145842/
University of Nebraska - Lincoln
	"... or in an anti-clockwise, Z-twist direction."
	Accessed 03 February 2021 from	 
	
https://digitalcommons.unl.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1146&context=tsaconf
University of California - Berkeley
	"... counterclockwise (left, or "Z") twist ..."
	Accessed 03 February 2021 from	 
	
https://digitalassets.lib.berkeley.edu/anthpubs/ucb/proof/pdfs/ucas015-003.pdf
RAVENOX Rope
	"Left-laid rope: a rope that is twisted clockwise. Also referred to as S-lay."
	Accessed 05 February 2021 from
	
https://www.ravenox.com/blogs/news/rope-terms
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