wheel alignment castor
http://www.google.com/images?hl=en&rls=com.microsoft:en-us&q=wheel%20alignment%20castor&um=1&ie=UTF-8&source=og&sa=N&tab=wi

http://www.google.com/search?hl=en&rls=com.microsoft%3Aen-us&q=wheel+alignment+castor&btnG=Search&aq=f&aqi=&aql=&oq=&gs_rfai=




A Short Course on Wheel Alignment
http://www.familycar.com/alignment.htm

Wheel alignment theory
http://openlibrary.org/books/OL12143348M/Wheel_alignment_theory
WHEEL ALIGNMENT THEORY/OPERATION
1995 Volvo 850
http://www.volvoclub.org.uk/tech/service/850/WheelAlignmentTheoryOperation.pdf

Tech Talk FAQ - Wheel Alignment Terms & Theory
http://www.d26.net/240sx/mirrors/Whiteline_WheelAlignmentTermsAndTheory.htm