Philips Boroscopic Sheet (Shade 3)

6.5" by 6.5" Plates of sheet glass. Boroscopic (GREEN ACE) Glass utilizes rare earth oxides in its composition to provide filtration. This glass is very efficient in filtering sodium flare in addition to providing excellent ultraviolet and infrared protection. The ACE glass is becoming a preferable choice of lamp workers. It is very comfortable for viewing under high ambient light conditions such as when working with glowing heat sources for a duration of time.