www.safetyandhealthmagazine.com/articles/welding-helmet-5

Welding helmet

June 1, 2011
The VIKING 2450 Series auto-darkening welding helmet line now includes a limited-edition “Thor” helmet featuring original graphics of Marvel Comics’ Thor – ideal for any classic comic book fan. The helmet has a 2.4-inch viewing area height and a shade level with continuously variable 9-13 shade control.

Lincoln Electric Co.