SPIDERS’ WEBS REPLACED
New Tolerances For Space Age TBit A Retger Odvretoeedentf _ HEW ORLEANS. Spiders’ wMnl once widely used for awluUn to optiSLr.'SSW&a’S timely too Itoee directly on to glass. sSentiats at tire Chryster Mid that space age tdersnces make demands that, nature cannot fuMH. The crass hairs of a spider’s weWha black widow has the tomium web —are between TO millionths and 100 millionths of an inch thick. Etch hairiinre have a diameter of 100 millionths to 120 millionths of an Inch. Of the M optical sighting instruments to be used in aligning the parts of the giant Saturn space vehicle booster, only two have spider web cross hairs. All others were recently replaced with etched lines.
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Bibliographic details
Press, Volume CII, Issue 30274, 29 October 1963, Page 11
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118SPIDERS’ WEBS REPLACED Press, Volume CII, Issue 30274, 29 October 1963, Page 11
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