Smithsonian Report. I960— Palmer 



Plate 8 



1. Technicians usint; ihe Smith-Sheffield Micronaire instrument to evahiau- IiIkt fineness 

 and maturity in combination as possessed by cotton lint. The Micronaire sc:ile values 

 observed represent averages for the respective test specimens. 



2. Technician determining the average fiber strength of prepared test specimens of cotton 

 lint using the Pressley fiat-unwrapped-bundle tester. The gauge spacing generally used 

 between the two gripping jaws of the fiber bundle is either or 1/8-inch. The strength 

 results may be expressed as the initial Pressley index observed, or some other calculated 

 index, or 1,000 pounds per square inch, or the new textile measure of grams per tex. 



