Sun Company Lev-o-gage Sr. Inclinometer and Tilt Gauge | Level for Trailer or 5th Wheel IDEAL TILT READING - Monitors tilt from -50 to 50 degrees. Brass ball rides in special damping fluid for smooth, accurate readings. LARGE, EASY TO READ DISPLAY - Brass ball instead of bubble included in bright Saturn yellow tube assembly. Large size and engraved/hand painted numbers make for a functional, easy-to-read display. SHATTERPROOF DESIGN - Tube assembly is made out of a rugged copolymer "flex tube" for ultimate durability. MOUNTS WITH 3M VHB TAPE - Lev-o-gage includes a piece of 3M VHB (Very-High Bond) tape on the back for easy mounting. MADE IN USA - From durable, high-quality materials.