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2. Welding helmet - Wikipedia

   en.wikipedia.org/wiki/Welding_helmet

   Speedglas welding helmet. The modern welding helmet used today was first introduced in 1937 by Willson Products. [5] In 1981, Swedish manufacturer Hornell International (now owned by 3M [6]) introduced an LCD electronic shutter that darkens automatically when sensors detect the bright welding arc, [7] the Speedglas Auto-Darkening Filter. With ...

3. Photokeratitis - Wikipedia

   en.wikipedia.org/wiki/Photokeratitis

   Common causes include welding with failure to use adequate eye protection such as an appropriate welding helmet or welding goggles. This is termed arc eye , while photokeratitis caused by exposure to sunlight reflected from ice and snow, particularly at elevation, is commonly called snow blindness . [ 5 ]

4. Advanced Combat Helmet - Wikipedia

   en.wikipedia.org/wiki/Advanced_Combat_Helmet

   The Advanced Combat Helmet (ACH) is the United States Army's current combat helmet, used since the early 2000s. It was developed by the United States Army Soldier Systems Center , [ 2 ] the U.S. Army Special Operations Command , [ 3 ] and the U.S. Army Research Laboratory [ 4 ] to be the next generation of protective combat helmets for use by ...

5. Future Assault Shell Technology helmet - Wikipedia

   en.wikipedia.org/wiki/Future_Assault_Shell...

   The FAST RF1 High Cut Helmet System released in 2021 is a rifle rated ballistic helmet at an average of 3.5 lbs (1592 grams) able to protect against rifle rounds like the 7.62×39mm and 7.62x51mm due to the 0.400" (10.16mm) shell thickness. The different color options are tan 499, ranger green, MultiCam, black, and urban gray.

6. Penn State football helmets through the years - AOL

   www.aol.com/news/penn-state-football-helmets...

   USA TODAY Sports. You have to look at it closely, but there was a slight modification to the Penn State helmet in 1986. The shade of gray used on the facemask was darker and, to the naked eye ...

7. Arc welding - Wikipedia

   en.wikipedia.org/wiki/Arc_welding

   Arc welding is a welding process that is used to join metal to metal by ... Auto darkening welding hood with 90 × 110 mm cartridge and 3.78 × 1.85 in viewing area ...