Patented Tourniquet Bungee System attaches to beams, posts, pipes or couduit for lightning-fast, hands-free leveling 33% larger high-contrast green vials with 2% slope lines for maximum low-light visibility and speed Match grade epoxy-locked 360° solid acrylic block vials deliver .0005"/inch guaranteed lifetime accuracy High-strength, precision-milled aluminum box beam with removable shock-absorbing armored end caps survives the world's toughest job sites Chamfered spine for a stronger, twist resistant frame that’s more comfortable to hold and maneuver Compatible with SRS™ retention lanyards for added safety 72" length provides unparalled reach to tackle large scale missions with the utmost precision Limited lifetime warranty