• Box beam construction with reinforcing ribs prevents twisting and bending under normal use
• Precision milled on both surfaces for maximum accuracy
• 3 shatter-resistant acrylic block vials read horizontal, plumb and 45°
• Top read centre vial provides 300° viewing for easy readability
• Oversized hand holes for sure grip
• Shock absorbing beveled end caps
• Bright yellow finish for improved visibility
• Meets GS / TUV and CE standards