Does anyone know where I can find the specifications of the timing ramp used in Australia? A local company has produced something similar but hasn't produced a conversion chart for distance to time. The local version uses a jack instead of a bespoke sphere. I'm looking for the mass and diameter/circumference of the sphere and the height and length of the ramp. I also need a subjective assessment of whether the surface of the sphere is comparable to the surface of a new jack. Does anyone have any info?