Hi, I got this Cross pen and pencil set years and years ago from Office Depot, it was the most expensive pen and pencil I ever bought, like $30 and I used it all the time. The pencil is a twist, and should take .7mm lead. I can't even remember when anymo
In 1879, Alonzo Cross invented the first propel-repel ‘mechanical pencil’ and held a further five patents for mechanical pencils in his time. In the 1930s, the company manufactured its first fountain pens. It didn’t add a ballpoint pen to its line until 1953, however — waiting until t...
The mechanical property and PDC of XLPE insulation under different thermal ageing times are measured. The effects of thermal ageing on the polarization and depolarization current value, conductivity, trap energy level, and elongation at break retention rate (ER%) of XLPE insulation samples are ...
Spatial ability is important for success in STEM fields but is typically measured using a small number of tests that were not developed in the STEM context, have not been normed with recent samples, or have not been subjected to modern psychometric analy