DC motor or Stepper motor????

jremington:
You can buy small, synchronous motors that turn as slowly as 1 revolution per day. They are as accurate as household AC clocks.
http://www.autotrol.com/model-150-ac-gear-motor.aspx

Thanks, but is there an alternative one I could use, if i wanted to increase or decrease the angle of rotation for testing purposes, one in which i could control the input?