| http://www.w3.org/ns/prov#value | - The space between adjacent ends of successive flights is slightly less than the radius of the ball, whereas the combined width of one flight and the space is such as to permit the ball to be supported on the face of the chordal edge of the flight, if the device is used either horizontally or at an angle from the horizontal less than the angle of repose of the balls on the flights.
|
