HD⚡SWITCH: Engineered Performance SUPERIOR QUALITY: The Measurement arm is 100% Thicker than competitive gauges. This Prevents Flexing and guarantees accurate and repeatable measurements. STABILIZER EXTENSION: Adds Stability & Prevents the Gage from Falling Over. Items Can Also Be Placed on the Extension to Hold the Gage During Deck Adjustments. This makes adjustments faster, easier and more accurate with less aggravation. ACCURACY: Unlike our competitors, the base of our gauge is completely flat. This ensures accurate and repeatable measurements every time. The HD Switch Deck Leveling Gage has a Stabilizer Extension used to Make Deck Leveling Easier, faster, and more accurate. Place an Object (like a hammer) on the extension during the deck adjustment, which prevents the gauge from falling over and allows for precision adjustments - Saving Time and Aggravation. The Measurement arm is twice as thick as competitive gauges. This prevents the arm from flexing and provides a much more accurate measurement. The Base of the HD Switch leveler is completely flat, ensuring repeatable measurements.