Abbreviation for thousand yards per pound, a unit formerly used to describe yarn density. 1 typp equals about 2.015 907 meters per gram, and "n" typp corresponds to a yarn density of 2.015 907/n tex (see above)
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}