They’re often used to align girders or beams in steel framing
22972 Disc Backup Pad Adapter
Red Numeric Marks Feet
Flare Type Single 45 Degree Capacity Tubing O
3M 5421 UHMW Film Tape, 1 in x 36 yd, 6.7 mil, Transparent G4780623 They’re often used to alignFilm Tape, Tape Color Transparent, Tape Brand 3M(TM), Brand and Series 3M 5421, Imperial Tape Length 36 yd, Imperial Tape Width 1 in, Imperial Tape WxL 1 in x 36 yd, Tape Thickness 6. 7 mil, Tape Backing Material Polyethylene Film, Tape Adhesive Material Rubber, Maximum Tape Performance Temperature 225 Degrees F, Minimum Tape Performance Temperature 30 Degrees F, Temperature Range 30 Degrees to 225 Degrees F, Series 5421, Tape Type Surface Protection