Robertson, Phillips, and the History of the Screwdriver
18:10
Duck(t) Tape: the World's Most Useful Tool.
18:33
Where DO screws come from?
9:15
Phillips Screws Suck
16:34
TV: A Forgotten History
22:23
The Most Important Material Ever Made
9:46
How America RUINED the world's screws! (Robertson vs. Phillips)
13:13
Stainless Forgotten History: A Revolution in Steel
1:06:56