How America's Oldest Drum Factory Stayed In Business For Over 160 Years

This video takes an extensive look at Noble & Cooley, an American drum company founded in 1854 that has been going strong for more than 160 years. What began as a toy drum seller evolved over the years into an artisanal manufacturer of high-quality instruments that are sought after by professional musicians around the world. Business Insider examines this progression as well as Noble & Cooley’s commitment to quality that has set it apart from the competition for decades. 

Questions:

1. What role has Noble & Cooley’s commitment to quality played in its success over the last century and a half? 
2. What is the purpose of Noble & Cooley’s rule about not drilling holes into drums on Fridays?