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Spider lines

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filaments of a spider's web crossing the field of vision in optical instruments; - used for determining the exact position of objects and making delicate measurements. Fine wires, silk fibers, or lines on glass similarly placed, are called spider lines.

See also: Spider



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Spiderless inline-designed heads are said to result in no spider lines and allow room for more air, thus eliminating cold legs, which can inhibit product output, according to the company.
Inline tubing dies by Rubber World
Battenfeld Gloucester Engineering showed its newly redesigned Opticell foam sheet die for producing single or double PS or PE webs with no spider lines.
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This causes weld-lines, knit lines, or spider lines in the wall of a pipe when two separated melt streams recombine, and they run the whole length of the finished pipe.
Experimental study and computer simulation of the effect of spider ... by Huang, Y.; Prentice, P. / Polymer Engineering and Science
 
 
 
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