Build one!
http://www.bikehacks.com/bikehacks/2012/06/7-diy-bike-wheel-truing-stands.html
Or just stick the wheels on a bike with brakes and tighten them so as close the rim as possible and true from there.
@JontyBottomley started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Build one!
http://www.bikehacks.com/bikehacks/2012/06/7-diy-bike-wheel-truing-stands.html
Or just stick the wheels on a bike with brakes and tighten them so as close the rim as possible and true from there.