Dial in your setup fast with graduated levels that make it easy to gauge how much adjustment you need. The screw-on design gives you a solid, lasting mount on your rig, a good pick if you'd rather not depend on tape or Velcro.
Yes. That steel can be tough, so test drill sizes and use cutting oil. One install started with a 3/16" hole that felt snug for the bolt, then re-drilled 13/64" for a better fit and added washers for support. Level the rig first, mark the true level, then tighten. If mounting holes aren't level, consider an adjustable bracket to fine-tune.
Choose the graduation scale that matches how you level. Some graduated levels mark inches from level, while others mark degrees. If you prefer reading inches for how many blocks to add, pick an inches scale. If you want angular reference, pick degrees. Verify the scale type in the description so it matches what you expect.
Screw-on graduated levels often give larger, easy-to-see displays, but require holes. Stick-on graduated levels are available, though sizes are typically in the 3 to 4 inch range. If you do choose screw-on, check wall construction (often 2" x 2" wood or metal studs) and use a proper sealant on the screws to help prevent water intrusion.
Mount it where you can see it from the truck cab or driver's door mirror. Several installs on the front of a 5th wheel or high on the trailer nose made it readable while backing in. Level the camper first, then align the bubbles to zero before tightening. If your siding is angled or lapped, use a flat spacer so the body sits square.
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