A new and distinct variety of Nectarine tree, denominated varietally as \u2018Burnecttwentyfour\u2019, and which produces an attractively colored firm-fleshed, sub-acid, clingstone nectarine, which is mature for harvesting and shipment approximately May 27 to June 5 under ecological conditions prevailing in the San Joaquin Valley of central California. A measuring device 22 measures the thickness of the printed articles 18 and transmits a corresponding measured signal 28 to a control device 30 of a processing device 32. The first and second hollow shafts are fitted and fixed separately on the operating shaft. The piston is mounted in the intake chamber. The contact portions and the abutting portions are opposite to each other in a top-to-bottom direction.