Abstract: A mobile speedometer tester comprising at least two main wheels rotatably attached to a trailer frame, and a trailer frame. A target disk, pickup and totalizer measure the rate of roller rotation, and bellcranks rotatably mounted to the trailer frame allow the main wheels to be extended and retracted. A brake is provided to stop the rollers from rotating, and the front wheel is retractable by means of an electric motor. The main wheels are quickly and easily removable from the bellcranks. Ramps attached to the trailer frame allow test vehicles to drive up onto the mobile speedometer tester in order to test their speedometers. A motorcycle version allows motorcycle speedometers to be tested.

Abstract: A can pour system comprising a can, a lid, a cap and an agitator. The lid comprises a lid tongue sized to frictionally mate with a can female groove, and a lid spout having a spout aperture and a spout male thread. The cap comprises a cap female thread sized to mate with the spout male thread. The agitator comprises an agitator shank and an agitator wing.