The Ronometer was designed to make wheel alignment easier and more accurate. The majority of motorcycle wheels are out of line when the chain adjuster marks on the swingarm are lined up. Depending on which way the wheels are out of line, this can cause the bike to turn more quickly into a left or right hand corner. The Ronometer is two straight edges made from lightweight alloy square tube, that clamp to the rear tyre and run down to the front wheel. You can then see if the wheels are in line and adjust the chain adjuster blocks so that the gap at the front wheel is the same distance on both sides.