Zero, single or double slope working options. Box section is a top quality steel frame construction. Special treated steel, double side share with unique design to get most convenient penetraion angle for maximum eeficiency. Rugged design laser equipment are built to be strong and job-site tough. The mechanical/ optical unit is mounted in water proof aluminium housing, in fact, the laser will run if submerged 3 mt. The housing has an integrated handle for ease of handling.