This is THE BEST camber/caster gauge on the market. It uses the same wheel attachment parts that are used on $30k+ alignment racks, and is accurate to within 0.1 degrees. The cheap bubble level gauges can not come close to the accuracy of this tool, and your alignment is not something you want to skimp out on! This product makes it very easy to measure camber whether you are at the track or in your garage. As an additional bonus, caster is measured without the need for turn plates. Perfect for: -Increasing your camber for track use -Dialing in different camber settings on a race car -Measuring caster without turn plates -Saving money!!! Camber Measurement - The digital readout is accurate to within 0.1 degrees, and the gauge can be calibrated for non-level surfaces in a matter of seconds. Caster Measurement - Instead of requiring expensive turn plates to measure caster (like other brands), our product has turn plate functionality built in! Includes: -Hands-Free Camber Gauge Frame -Rim Attachment Parts -Tenhulzen Automotive Digital Readout -Instructions ****We are a USA owned and operated company and offer support 7 DAYS A WEEK****