Alternatively, IVC filters can be placed at the bedside either using fluoroscopy or transabdominal or intravascular ultrasound. Knowledge of the normal and variant anatomy of the vena cava is important for successful placement of vena cava filters and prevention of complications.
Welder's Glass. Welder's Shade Glass. A heat resistant grey-green tinted glass made to provide the correct eye protection for every welding operation. The shade numbers 1-14 refer to the density needed for the different welding operations. The higher the number, the darker the shade. Stock sheet size is 0.108 thick in Density 3 through Density 14.
View Full Version : Auto darkening helmet and burning eyes questions PLEASE!!! I have two el-cheapo welding helmets. The first is a Harbor Frieght (HF) model and the second is a Northern Tool (NT) model. With the exception of the blue flame stickers, vs. Orange flame stickers, they are identical in ALMOST every way. I'm assuming they are Chinese JUNK...... Anyway, after a half day of welding, my eyes feel like they are burning ever so slightly no matter which of the two helmets I use. I must preface that Im not a professional and I'm just an occassional amatuer lawn-art weekend welder..