Abstract
Page 1, clause 2.1: Delete the existing text and substitute the following. "The dimensions laid down for the length of the saddle may be decreased by one step using values from the R10 series of preferred numbers."
Page 1, clause 2.1: Delete the existing text and substitute the following. "The dimensions laid down for the length of the saddle may be decreased by one step using values from the R10 series of preferred numbers."