Axminster Auto-Darkening Welding Helmet

This is a lightweight full face, welding helmet with an auto-darkening lens unit. Two small photo-electric sensors, located in the front face of the helmet, detect any rapid increase in light, such as when striking an arc, and then darken the screen in a mere 100 millionth of a second. An easily-changed clear plastic lens protects the auto-darkening lens filter. An adjusting knob allows the setting of the dark level of the helmet between shades 9 to 13. Inside the helmet is a fully adjustable head strap assembly and the knobs on the side adjust the friction level, controlling the helmet movement. A rear turnbuckle knob allows the head strap to be set to hat size, or tightened onto the head as preferred.